15.5.2023
Congratulations to Jean Krivine (IRIF) and Vincent Danos (ENS and CNRS) who have received the Concur Test-of-Time Award (period 2002-2005) for their article “Reversible Communicating Systems”, published at CONCUR 2004. To read their article :

11.5.2023
À l’occasion du départ à la retraite de François Métayer, le LHC rendra hommage au spécialiste des polygraphes, de l’homotopie et de la réécriture, animateur d’un groupe de travail mythique sur ces sujets. L’événement aura lieu les 8 et 9 juin 2023 et sera précédé par les journées LHC.

5.5.2023
The next speaker of the IRIF Graphs seminar is Sebastiano Vigna (Università degli Studi di Milano). The talk will be given in person on Tuesday 9th May at 15h in room 147 Olympe de Gouges on Monotonicity on undirected networks.

3.4.2023
We are proud to announce that Claire Mathieu was named as recipient of an EATCS fellowship for her fundamental contributions to solving theoretical and applied problems in approximation algorithms, online algorithms, and auction theory.

24.3.2023
The 50th edition of EPIT (École de Printemps d’Informatique Théorique) will have as theme The Kaleidoscope of Complexity Theory and will take place on June 12-16, 2023 at the Vieille Perrotine CAES/CNRS holiday center on the Oléron Island, in France.

10.3.2023
Les prochaines Journées Nationales du GDR IM (JNIM 2023) auront lieu à l'Université Paris Cité du 4 avril au 7 avril et sont organisées par l'IRIF. Programme et inscription ici.

7.3.2023
The paper “Decentralized Asynchronous Crash-resilient Runtime Verification” authored by Borzoo Bonakdarpour (MSU), Pierre Fraigniaud (IRIF), Sergio Rajsbaum (UNAM), David Rosenblueth (UNAM), and Corentin Travers (LIS) has been selected in the “sample of [eight] exciting [..] articles on a diverse range of topics that were published in 2022” in the Journal of the ACM (JACM).

7.3.2023
Pour la troisième année consécutive, la Faculté des Sciences d’Université Paris Cité lance un appel à manifestation d’intérêt pour accompagner et soutenir ses membres dans leurs initiatives ayant vocation à rendre accessible un sujet de recherche scientifique à un public non spécialiste. Date limite 20 mars 2023 minuit.

6.3.2023
“Manuel de Cryptanalyse à l’usage de la NSA” est une conférence ludique, présentée par Sylvain Perifel – Maître de conférences (Université Paris Cité/IRIF) à l’occasion de l’édition 2022 de la Fête de la Science. Elle retrace et met en pratique les différentes avancées historiques de cette science, du code de César à RSA en passant par les substitutions mono-alphabétiques et par le chiffre de Vigenère.

6.3.2023
Abhishek De, former PhD student at IRIF explains his thesis "Linear logic with the least and greatest fixed points. Truth semantics, complexity and a parallel syntax in this written interview.

6.3.2023
Farzad Jafarrahmani, former PhD student at IRIF explains his thesis Fixpoints of Types in Linear Logic from a Curry-Howard-Lambek Perspective in this written interview.

27.2.2023
One paper authored by IRIF member will be presented at STOC 2023, June 20-23, 2023 in Orlando, Florida.

27.2.2023
Shared engineer position in formal methods, between IRIF, LIPN and LMF. Deadline to apply: 17/03/2023.

14.2.2023
On February 11, 2023 we celebrated the International Day of Women and Girls in Science. To highlight this special date, 3 interviews from our PhD students: Mouna Safir, Lucie Guillou and Shamisa Nematollahi.

13.2.2023
L’IRIF recherche un(e) assistant(e) de communication pour un contrat CDD de 24 mois. Date limite pour candidater : 28/02/2023. Date prévue d’embauche : 01/03/2023.

10.2.2023
Claire Mathieu, CNRS Senior Research Scientist and algorithm specialist, was interviewed on SQOOL TV about ChatGPT. How this AI works, what is at stake and what are its advantages, Claire Mathieu discussed the basics of ChatGPT.

10.2.2023
The deadline to apply to the prestigious L’Oréal-UNESCO Young Talents award 2023 is February 27, 2023.

10.2.2023
Congratulations to Sophie Laplante (IRIF) and the QuBobs project team. Their poster presented at QIP 2023 received the best poster award.

10.2.2023
Victor Lanvin, lauréat d’un prix de thèse Génie de la Programmation et du Logiciel 2022 et ancien doctorant à l’IRIF présente sa thèse A Semantic Foundation for Gradual Set-Theoretic Types dans cette interview écrite.

27.1.2023
A full-time research associates position is available to work on the ​VeSyAm research project. The position will start in July 2023. Deadline to apply: 12 noon on 15 Feb 2023. Further information in the job description.

25.1.2023
Claire Mathieu, membre de l’IRIF et spécialiste des algorithmes, est intervenue à l’émission Arrêt sur Images autour du ChatGPT. Comment cette IA construit-elle ses textes ? Pourquoi parvient-elle à couvrir à peu près n’importe quel sujet ?

16.1.2023
Claire Mathieu and 8 other authors co-authored the article "Découpage électoral des circonscriptions législatives en France : Déséquilibres démographiques et contraintes territoriales" about a new perspective for understanding electoral maps, using computational social science to study the criteria which shape how electoral districts are drawn up in France.

13.1.2023
Internship proposal for Masters student in computer science at LS2N and IRIF in Real-time analysis and verification of ROS2 robotic applications. To apply, please refer to the internship description.

11.1.2023
LAFI'23, a workshop affiliated to POPL’23 about Languages for Inference, will be held on January 15, 2023, as a bi-located event in Boston and at Université Paris Cité. The Paris antenna will take place in salle Leduc, at the first floor of Saints-Pères building, 45 rue des Saints-Pères, 75006 Paris, from 3pm to 9:30pm Paris time. The The talks of V. Blanchi, G. Caylak, M. Pagani (IRIF), F. Zaiser will happen physically in Paris. Registration is mandatory.

14.12.2022
Ahmed Bouajjani (IRIF) figures among the nine new honorary doctors appointed at Faculty of Science and Technology of Uppsala University. His research focuses on verification, specification and semantics for parallel and distributed programs and computer systems.

14.12.2022
We are very pleased to welcome Marie Albenque, Senior Research Scientist at CNRS. Learn more about her and her work in this written interview.

12.12.2022
Jonas Landman, former PhD student at IRIF, is the 2022 winner of a thesis Prize from Chancellerie des Universités de Paris. His thesis “Quantum Algorithms for Unsupervised Machine Learning and Neural Networks” was awarded in the All Specialties Science Prize Category.

6.12.2022
We are happy to host Lauren K. Williams for a one-year visit at IRIF. To know more about her and her research, read her interview.

30.11.2022
Sophie Laplante (IRIF) and Anupa Sunny (IRIF) will present at ITCS 2023 their paper Certificate Games in which players are given inputs x, y such that f(x)\≠f(y). Their goal is to find a position where the bits of their inputs differ. This simple new game can be used to give bounds on query complexity, block sensitivity and several other complexity measures.

25.11.2022
Le prix informatique Lovelace-Babbage de l’Académie des Sciences 2023 récompense des scientifiques dont les travaux, des plus théoriques aux plus appliqués, contribuent à la création des nouvelles technologies. Date limite pour constituer son dossier de candidature : 10 décembre 2022.

23.11.2022
3 papers coauthored by IRIF members will be presented at ITCS - Innovations in Theoretical Computer Science 2023.

23.11.2022
Nicolas Behr (IRIF) and Paul-André Melliès (IRIF) will speak at the CAP 22 conference which will take place at IHES on Monday 28 and Tuesday 29 November. The registration to the conference is free but mandatory.

18.11.2022
Le Hcéres a publié la synthèse nationale et de prospective sur les mathématiques. Cette synthèse est constituée de trois volumes fruit d’un travail inédit mené pendant 2 ans par le comité d’experts dont fait partie Valérie Berthé (IRIF). Volume 1 : Rapport principal. Volume 2 : Analyse disciplinaire et des interactions scientifiques. Volume 3 : Caractérisation des publications dans le monde et en France.

18.11.2022
On November 8th, Iordanis Kerenidis (IRIF) and 5 other founding members officially launched the EQSI-European Quantum Software Institute with a stakeholder event in Paris. This initiative aims to further align development processes and jointly achieve responsible innovation in Europe for Quantum Software and Quantum Algorithms, through co-creation with industry and Quantum Hardware partners.

16.11.2022
Les Assises des Mathématiques se déroulent à la Maison de l’Unesco du 14 au 16 novembre 2022. Valérie Berthé et Claire Mathieu, deux membres de l’IRIF, sont intervenues respectivement à la Table ronde sur la Synthèse nationale des Mathématiques et à la Table ronde sur les interactions entre les Mathématiques et les autres sciences.

14.11.2022
Lucas Pesenti and Adrian Vladu (IRIF) will present, at SODA 2023, their paper Discrepancy Minimization via Regularization. They make progress towards conjectures in discrepancy theory by showing that Newton's method can produce low discrepancy colorings.

14.11.2022
Congratulations to Olivier Carton (IRIF), head of the pole Automata, structures and verification at IRIF and recently appointed senior member of Institut universitaire de France (IUF). He is interested by the links and connexions between normality and automata.

14.11.2022
Guillaume Chapuy (IRIF) and Guillem Perarnau (Universitat Politècnica de Catalunya) will present, at SODA 2023, their paper proving that almost all automata with n states have a reset word not much longer than √n. This is based on a structure result saying that almost all automata are w-trees (i.e., the w-transitions induce a tree), for some very short word w — whose length is only logarithmic.

7.11.2022
The FRAIGNIAUD workshop (Fundamental Research and Algorithmic Innovations in Graphs, Networks and the Internet, with Applications and Upcoming Directions) will take place in Paris on the 28th and 29th of November, on the occasion of Pierre FRAIGNIAUD’s 60th birthday.

2.11.2022
Jonas Landman, former PhD student at IRIF is the 2022 winner of the Thesis Prize Chancellerie des Universités de Paris. His thesis entitled Quantum Algorithms for Unsupervised Machine Learning and Neural Networks was awarded in the All Specialties Science Prize Category.

27.10.2022
Gaëtan Douéneau-Tabot, doctorant en 3ème année à l’IRIF, est lauréat 2022 de deux Best Student Paper Awards remis par les deux principales conférences organisées par l’EATCS : ICALP et MFCS. En juillet 2022, il a reçu le Best Student Paper Award track B à ICALP et en août 2022, il a reçu un second prix à la conférence MFCS. Il nous explique sa recherche dans cette interview écrite.

27.10.2022
2 papers coauthored by IRIF members will be presented at SODA 2023, January 22-25. Complete list of accepted papers here.

25.10.2022
Sergio Rajsbaum, a one-year visitor at IRIF, has received the Computer Science National Prize of Mexico. His research mainly focuses on distributed computing systems: what can be done as a system? What are the limits? Learn more about him and his work in this written interview.

24.10.2022
Various postdoc positions available at IRIF : several openings in the Algorithms and Complexity group and a 14-month position available in the Polymorphic records in Elixir project.

24.10.2022
IRIF now has a HAL webpage, an open archive where authors can deposit scholar documents from all academic fields.

24.10.2022
L'IRIF inaugure un nouvel onglet “Médiation” sur son site web. Cet onglet rassemble les activités et projets de médiation scientifique organisés par le laboratoire. Vous y trouverez les informations autour de la Fête de la Science, les stages scolaires d'observation, l'exposition sur les 50 ans d'informatique théorique et le projet QuBOBS de Sophie Laplante.

21.10.2022
The FSMP was present at ICALP 2022 this summer and took the opportunity to meet the computer scientists Patrick Cousot (New York University), winner of the EATCS prize, Leslie Ann Goldberg (Oxford University), plenary speaker, Craig Gentry (IBM Research), Zvika Brakerski (Weizmann Institute of Science) and Vinod Vaikuntanathany (University of Toronto), winners of the Gödel prize, Gaëtan Douéneau (PhD student at IRIF), best student paper award, and Geoffroy Couteau(IRIF), member of the organization of this edition. All the videos interviews here.

21.10.2022
A new QuanTech Seminar Cycle will take place on October 14, 21, 28 and December 2nd. The seminars provide an overview of the different approaches to implementing quantum technologies ranging from aspects of physics to computer science, and from academic to industrial research.

21.10.2022
Du 7 au 17 octobre 2022, l’IRIF et l’UFR d’Informatique ont accueilli une dizaine de classes de fin primaire-début collège dans le cadre des activités de la Fête de la Science. Au programme, un baptême de programmation et plusieurs îlots de jeux pour s’initier à l’informatique en s’amusant. Plus d’informations sur notre page dédiée à la Fête de la Science.

21.10.2022
We are very pleased to welcome Sylvain Douteau, Associate professor at Université Paris Cité. Learn more about his work in this written interview.

21.10.2022
Les 13 et 14 octobre 2022, l'IRIF et le laboratoire MPQ ont proposé aux classes de lycée un parcours quantique A la Découverte des Technologies Quantiques incluant une conférence sur la cryptographie, un atelier sur le protocole BB84, un atelier sur les ions piégés et un autre sur les photons intriqués.

28.9.2022
Thomas Ehrhard, CNRS senior researcher at IRIF, turned 60 in 2021. A meeting will take place in Paris, at the CNAM, on 29-30 September 2022 to celebrate Ehrhard’s contributions to logic and the semantics of programming languages. For more information, follow the arrow:

19.9.2022
Philippe Schnoebelen (LMF), François Laroussinie (IRIF) and Nicolas Markey (IRISA), received the Test-of-Time award at the conference LICS 2022 for their research on temporal logic.

7.9.2022
IRIF is a co-sponsor of the ICTP-EAUMP School on Mathematical Programming and Algorithms - an African Mathematical School. The 2022 summer school organized by the University of Nairobi took place at Kenya School of Government, Nairobi, Kenya 11-29 July, 2022. Three IRIF members took part of this project: Jean-Baptiste Yunès, Roberto Mantaci and Anna Vanden Wyngaerd.

2.9.2022
Plus que quelques jours pour déposer votre candidature au Prix Irène Joliot-Curie, ce prix qui vise à promouvoir la place des femmes dans la recherche et la technologie en France. Clôture des candidatures le 8/09/2022.

2.9.2022
Pour son 48ème épisode, le podcast DECODE Quantum a reçu le directeur de l'IRIF Frédéric Magniez dans un entretien approfondi sur le quantique. Il est question, entre autres, d'algorithmes quantiques, de leur intérêt et de leur construction. Par ici pour écouter l'émission.

2.9.2022
The 2nd Workshop Complexity and Algorithms (CoA 2022) will take place in September 26-28 2022 at Institut Henri Poincaré (IHP), Paris. Scientific program includes talks from invited speakers Marthe Bonamy (LaBRI), Carola Doerr (LIP6), Sébastien Tavenas (LAMA) and Adrian Vladu (IRIF).

2.9.2022
Houcine Ben Dali, PhD student at IRIF and IECL was awarded Best student paper at FPSAC’22 for his article Integrality in the Matching-Jack conjecture and the Farahat-Higman algebra.

2.9.2022
The next ETAPS conference, a forum of top-conferences in computer science, will happen in Paris, April 22-27 2023. Paper submission is opened until October 13, 2022, 23:59 AoE.

2.9.2022
L’Académie des sciences et la Société informatique de France annoncent la création d’un nouveau prix en informatique : le prix Lovelace-Babbage.

31.8.2022
Baptiste Louf, a former IRIF PhD. student is the 2021 winner of the Chancellerie des Universités de Paris thesis award in the “all specialties” science category. Learn more about his work in this written interview.

26.8.2022
Amos Korman (IRIF) and Robin Vacus (IRIF) presented at PODC'22 their paper studying agreement processes in stochastic environments using minimal communication, inspired by biological scenarios.

11.8.2022
Le prix de thèse Gilles Kahn récompense chaque année une excellente thèse en informatique. Sont éligibles toutes les thèses soutenues au sein d’établissements français entre le 1er Septembre 2021 et le 31 Août 2022. Date limite de dépôt des candidatures : 16 septembre 2022.

11.8.2022
Leslie Ann Goldberg, invited speaker at ICALP 2022 was interviewed by La Recherche about some of the key issues she is interested in.

8.8.2022
The European Association for Programming Languages and Systems (EAPLS) has established a Best PhD Dissertation Award in the research area of programming languages and systems. Candidates for the award must be nominated by their supervisor. Deadline for nominations : 30 August 2022.

8.8.2022
Pierre Fraigniaud, Senior Research Scientist at IRIF/CNRS, Maximilien Lesellier, Head of Administration at IRIF, and Afonso Ferreira, Europe scientific advisor for INS2I at CNRS have written a short document aiming at helping researchers to navigate in the Horizon Europe programme from a researcher perspective.

28.7.2022
A paper authored by Ahmed Bouajjani (IRIF), Wael-Amine Boutglay (IRIF and UM6P-CS), and Peter Habermehl (IRIF), will be presented on August 7 at the 34th Intern. Conf. on Computer Aided Verification (CAV) – August 7-11: Data-driven Numerical Invariant Synthesis with Automatic Generation of Attributes.

27.7.2022
Zhouningxin Wang (IRIF) will present “Circular Flows in Mono-directed Eulerian Signed Graphs” at the 8th Czech-Slovak International Symposium on Graph Theory, Combinatorics, Algorithms and Applications. The talk is based on a joint work with J. Li (China), R. Naserasr (IRIF), and X. Zhu (China).

25.7.2022
P. Fraigniaud (IRIF) and A. Paz, S. Rajsbaum will present at PODC'22 their paper A Speedup Theorem for Asynchronous Computation with Applications to Consensus and Approximate Agreement.

25.7.2022
The 2022 Donald E. Knuth Prize is awarded to Noga Alon, Professor of Mathematics at Princeton University and Emeritus Professor of Mathematics and Computer Science at Tel Aviv University, for foundational contributions in combinatorics and graph theory and applications to fundamental topics in computer science.

18.7.2022
A fully funded PhD position in Computer Science with the subject “Cyber-physical systems with AI components: modeling, learning and verification” opens in IRIF, Paris, within the Modeling and verification team, in the framework of the Franco-Japanese research project CyPhAI.

18.7.2022
ETAPS 2023: 1st joint call for papers of the 26th European Joint Conferences on Theory and Practice of Sofware. Paper submission is opened until October 13, 2022, 23:59 AoE.

13.7.2022
One paper coauthored by Enrica Duchi (IRIF) and Corentin Henriet (IRIF) will be presented at FPSAC 2022, the 34th International Conference on Formal Power Series & Algebraic Combinatorics, 18-22 July: Combinatorics of fighting fish, planar maps and Tamari intervals.

13.7.2022
One paper coauthored by Simon Apers (CNRS, IRIF) will be presented at FOCS 2022, the 63rd IEEE Symposium on Foundations of Computer Science, October 31 - November 3 in Denver, USA.

7.7.2022
MFPS 38 will be held on July 11–13, 2022, with a co-located event in Ithaca, NY, USA, and at IRIF in Paris, France. The talks of A. Goy, W. Heitjtjes, B. König, N. Munnich, D. Petrisan, F. Pfenning, A. Tosun, and N. Wu will take place in room 3052 at IRIF. The talks from speakers in Ithaca and online will be broadcast from 14:30 to 21:30. Registration is mandatory.

7.7.2022
ICALP 2022 is organised by IRIF and is taking place on July 4–8 on the Grands Moulins campus of Université Paris Cité. This edition marks the 50th anniversary of the conference and of the EATCS.

22.6.2022
The 2022 edition of Highlights will happen from June 28th to July 1st, 2022, in Paris, France. The conference will be hosted by Université Paris Cité, and happen on the site of Grands Moulins. To register, please fill in the registration form. If you wish to watch Highlights remotely, please fill in the online registration form. Online attendance is free.

7.6.2022
IRIF is co-organizing a Workshop Labyrinth of Combinatorics in memory of Pierre Rosenstiehl, June 15-17, Université Paris Cité

7.6.2022
IRIF is proud to announce that Olivier Carton, professor of Université Paris Cité and researcher at IRIF, was appointed senior member of IUF.

7.6.2022
Four papers coauthored by IRIF members will be presented at the conference TYPES'22, the main conference on type theory, this summer.

7.6.2022
Four papers coauthored by IRIF members will be presented at the conference PODC'22, the main conference on distributed computing, this summer.

7.6.2022
Two papers coauthored by IRIF members will be presented at the conference ISSAC'22, the main conference on symbolic and algebraic computation , this summer.

7.6.2022
IRIF is co-organizing a Workshop on Differentiable Programming, June 29-30, Université Paris Cité.

5.5.2022
On May 9th at 6pm will be held the festive evening of 75 years of computer science, from its foundations to its impact on society. This event is organized by LIP6 with the help from IRIF. Program and details of the evening here.

5.5.2022
Gaëtan Douéneau-Tabot (IRIF, DGA) will present at ICALP 2022 his paper Hiding pebbles when the output alphabet is unary. Pebble transducers are simple programs which compute functions over finite words. This paper studies subclass membership problems for the functions computed by pebble transducers whose outputs are unary. Its results can be understood as program optimization techniques.

5.5.2022
Antonio Casares (IRIF), Thomas Colcombet (IRIF) and Karoliina Lehtinen (Aix-Marseille University) will present at ICALP 2022 their paper studying the link between good-for-games Rabin automata and memory structures for infinite duration games over graphs. They also establish that these automata can be exponentially more succinct than equivalent deterministic ones.

4.5.2022
3 papers coauthored by IRIF members will be presented at ICALP 2022, July 4-8 in Paris, campus Grands Moulins of Université Paris Cité. Complete list of accepted papers here.

27.4.2022
Call for applications: SMARTS-UP International scholarships for Master’s students managed by Université Paris Cité will grant € 8,000 individual scholarships to allow Graduate Schools to welcome international students in their Masters’s programmes. The Graduate School on Quantum Technologies is taking part in this project. Visit the call for applications webpage for more details. Deadline: April 30th, 2022.

26.4.2022
Registration to ICALP 2022 is now open. Early registration is open until May 11th, 2022 and late registration starts from May 12th, 2022. For more details and to register, follow this link: https://icalp2022.dakini-pco.com.

14.4.2022
Today is World Quantum Day! All over the globe, but especially in Europe, many bright minds are researching groundbreaking quantum technologies. This day aims at promoting the public understanding of Quantum Science and Technology around the World.

12.4.2022
Thomas Colcombet, Geoffroy Couteau et Sylvain Schmitz members of IRIF and part of ICALP 2022 organizing committee were interviewed by FSMP (Fondation Sciences Mathématiques de Paris), one of the co-organizers of the conference. Learn more about the goals of the conference and what makes it special this year (interview in French only).

8.4.2022
On May 9th, 2022, LIP6 and IRIF are organizing a cocktail celebrating the 75th anniversary of computer science in France. A panel of experts will explore the discipline from its foundations to its impacts on society.

4.4.2022
[Update on the calendar] Four Teaching Assistants positions plus three other potential teaching assistant positions that may become available upon contest within UFR d’Informatique of Université Paris Cité fort he academic year 2022-2023. To learn more and to apply, visit: https://www.irif.fr/postes/ater. Deadline to apply, May 4th 2022 (4:00 pm Paris time).

28.3.2022
IRIF has the great pleasure to welcome a new Associate Professor: Mohammed Foughali, an expert in formal verification and robotics. Learn more about him and his work here.

17.3.2022
IRIF will finance one or two additional Master scholarships in Theoretical Computer Science within the PGSM program of FSMP for female students who have completed a bachelor’s degree or the first year masters in one of the universities of the FSMP network. Apply online by May 12th, 2022.

15.3.2022
How can we model the glass ceiling in research? Claire Mathieu (IRIF) will give a talk on Thursday, March 24th from 1:15 to 2:00 PM as part of Jeudis du Campus. Follow the event live on the CNRS Ile-de-France Villejuif Youtube channel.

10.3.2022
Reacting to the current situation and supporting the opening of the PAUSE program – Solidarity with Ukraine, few IRIF members have volunteered to host researchers at risk. Contact us at relocation@listes.irif.fr to discuss options for applying to this initiative.

9.3.2022
Tuesday, March 15 at 6 :30 pm on the campus Pierre et Marie Curie, Isabelle Collet (Université de Genève), Christine Tasson (LIP6), Anne Siegel (IRISA)and Alexis Kauffmann (Direction du numérique pour l’éducation) will exchange on a roundtable discussion about inequalities regarding the presence of women in the digital sector.

4.3.2022
Thursday, March 10 at 6 :30 pm on the campus Pierre et Marie Curie, Jean-Gabriel Ganascia, Jean-François Perrot, and Gérard Sabah will meet to discuss artificial intelligence. Where, when and how did this notion start? All details here.

2.3.2022
Sander Gribling (IRIF) and Harold Nieuwboer (University of Amsterdam) will present at STACS 2022 their paper Improved quantum lower and upper bounds for matrix scaling in which they show classical second-order methods together with quantum spectral sparsifiers lead to faster quantum algorithms for the matrix scaling problem, in the poly(1/eps)-regime.

2.3.2022
Pierre Bergé, Guillaume Ducoffe and Michel Habib (IRIF) will present their paper Subquadratic-time algorithm for the diameter and all eccentricities on median graphs at the 39th International Symposium on Theoretical Aspects of Computer Science (STACS 2022) held in Marseille, March 15-18 2022.

11.2.2022
Aujourd’hui, nous soulignons la Journée internationale des femmes et des filles de science avec 3 interviews de nos doctorantes et post-doctorantes : Ada Vienot, Klara Nosan et Anna Vanden-Wyngaerd.

10.2.2022
Un poste de Maître·sse de Conférences (références Galaxie no 204) en Mathématiques et informatique fondamentale est à pourvoir à l’UFR de Mathématiques de l’Université de Paris en vue d’une intégration à l’IRIF. Postuler sur Galaxie au plus tard le 28 février 2022 16h (heure de Paris). Prise de fonction le 1er novembre 2022 (si besoin, le laboratoire pourra fournir un CDD du 01/09/2022 au 31/10/2022). Plus de détails sur https://www.irif.fr/postes/universite.

8.2.2022
Baptiste Louf (currently doing his postdoc in Sweden), received the Thesis Prize The Chancellerie des Universités de Paris category science “all specialties” for his thesis prepared at IRIF under the supervision of Guillaume Chapuy and entitled Cartes de grand genre : de la hiérarchie KP aux limites probabilistes.

7.2.2022
The software Coq, a formal proof management system developed by teams at Inria and IRIF was rewarded by the Open Science Awards for Open Source Research Software category Scientific and Technical quality. Learn more about this software: https://coq.inria.fr.

4.2.2022
The deadline to submit your paper at ICALP 2022 is February 10, 2022 AoE. Link to submission (track A and B) here. More info on the submission guidelines here.

3.2.2022
IRIF is excited to organize the next ICALP conference. The 2022 edition will take place in Paris 4-8 July. Visit the website for more info : https://icalp2022.irif.fr. It will be the occasion to celebrate the 50th anniversary of both EATCS and the first ICALP which was held in Rocquencourt in 1972.

3.2.2022
IRIF has the great pleasure to welcome a new CNRS Research Scientist: Simon Apers, an expert in quantum computing. Learn more about him and his work here

18.1.2022
Two papers coauthored by IRIF members will be presented at the 39th International Symposium on Theoretical Aspects of Computer Science (STACS 2022) held in Marseille, March 15-18 2022.

17.12.2021
Paul-André Melliès (IRIF), Arthur Vale, Zhong Shao, Jérémie Koenig (Yale) and Léo Stefanesco (MPI) will present a layered concurrent object-based game semantics for the purpose of compositional software specification and certification at annual Symposium on Principles of Programming Languages, POPL2022 : https://hal.inria.fr/hal-03456034.

13.12.2021
Jacques Sakarovitch (IRIF) was elected new IFIP Fellow. IFIP Fellow is the most most prestigious IFIP's technical distinction which is conferred by the IFIP General Assembly on a current or past member of an IFIP body in recognition of outstanding contributions in the field of information processing, in the role of a Technical Leader, Scientist, Engineer, or Educator.

13.12.2021
Delia Kesner (IRIF) will present her paper A Fine-Grained Computational Interpretation of Girard’s Intuitionistic Proof-Nets at annual Symposium on Principles of Programming Languages, POPL2022. The paper introduces a functional term calculus that captures the essence of the operational semantics of Intuitionistic Linear Logic Proof-Nets with a faithful degree of granularity, both statically and dynamically.

2.12.2021
IRIF is very pleased to host for two months Serge Massar, Professor at the Université libre de Bruxelles (ULB) as part of the FSMP Distinguished Professor Fellowship. Serge Massar is the director of the Laboratoire d'Information Quantique (LIQ), of the Physics Department, Science Faculty, ULB. His research interests are quantum information theory, experimental quantum and non linear optics, machine learning.

2.12.2021
We are excited to be part of the “High-Performance Computer and Quantum Simulator hybrid” (HPCQS) aiming at creating a world-class supercomputing ecosystem. Learn more about the project here.

1.12.2021
Prochaine conférence dans le cadre des 75 ans d’informatique : L’informatique dans le 7ème art : fiction ou réalité ? Rendez-vous avec Fabrice Kordon le jeudi 9 décembre-18h00 sur le campus Pierre et Marie Curie de Sorbonne Université (tour 25.26, 1er étage – salle 105).

29.11.2021
IRIF has the great pleasure to welcome a new professor in computer science at Université de Paris: Matěj Stehlík, an expert in graph theory. Learn more about him and his work here.

25.11.2021
Giuseppe Castagna (IRIF), Mickaël Laurent (Université de Paris), Kim Nguyen (Université Paris Saclay) and Matthew Lutze (Université de Paris) will present their paper that shows a nifty way to use classic deduction rules to define a formal framework in which dynamic languages such as JavaScript can statically and precisely typed. Check the proof-of-concept implementation available at
https://typecaseunion.github.io/.

25.11.2021
Adrian Vladu's paper Faster Sparse Minimum Cost Flow by Electrical Flow Localization, jointly written with Kyriakos Axiotis and Aleksander Madry, will be presented at FOCS 2021.

24.11.2021
Three accepted papers coauthored by IRIF members will be presented at POPL 2022, the main conference on programming languages and programming systems, January 16-22.

8.11.2021
On November 16th, afternoon, the pole ASD organizes an event. Short introduction talks by the four new ASD permanent members will be presented. There will also be an informal introduction of PhD students and postdocs. Schedule and details of the talks here.

8.11.2021
One accepted paper coauthored by Adrian Vladu (IRIF), Alexandra Peste (IST Austria), Eugenia Iofinova (Institute of Science and Technology Austria) and Dan Alistarh (IST Austria & NeuralMagic) will be presented at the 35th Conference on Neural Information Processing Systems (NeurIPS) 6-14 December 2021 : AC/DC: Alternating Compressed/DeCompressed Training of Deep Neural Networks.

4.11.2021
The Automata, Structures, and Verification (ASV) day is scheduled this year on Friday November 19th. This will be the opportunity to meet again and learn about some of the work done in our pole, in particular by the new comers. Schedule and details of the talks here.

29.10.2021
IRIF will finance one or two additional Master scholarships in Foundations of Computer Science within the PGSM program of FSMP for female students who have completed a bachelor’s degree or the first year masters in one of the universities of the FSMP network. Apply online by February 24th, 2022.

25.10.2021
Tous les ans, l’IRIF accueille des élèves dans le cadre de leur stage d’observation de 3ème. Les stages proposés constituent une découverte de l’informatique et des métiers académiques correspondants, qu’ils soient au CNRS ou à l’université de Paris. Toutes les informations pour envoyer sa candidature ici.

19.10.2021
Eugene Asarin (IRIF), Alexandre Donzé, Oded Maler, and Dejan Nickovic receive the Test of Time Award at the 21st International Conference on Runtime Verification (RV’21) for their paper Parametric Identification of Temporal Properties. Watch the RV’21 Award Announcement here.

7.10.2021
PPS is holding its journée de rentrée on October 13-14, 2021. This year PPS has 13 new members. The aim of this get-together is to know them and their research topic. Schedule and details of the talks here.

29.9.2021
IRIF researchers are participating to the 30th edition of Fête de la Science. In different schools in Paris, they will be presenting workshops and games related to computer science.

27.9.2021
From ancient history to quantum, learn about cryptography at Fête de la science in an entertaining talk by Sylvain Perifel (IRIF). Save the date, Monday October 4th, 10am at Amphitheater 1A, Halle aux farines - Campus Grands Moulins.

14.9.2021
Eugene Asarin (IRIF), Thomas Ferrère, Dejan Ničković and Dogan Ulus receive the Oded Maler best paper award in Timed Systems at the conference Formats’2021 for their paper On the complexity of timed pattern matching.

7.9.2021
IRIF is very pleased to host for three months Sergio Rajsbaum, full time Researcher at the Instituto de Matemáticas of the Universidad Nacional Autónoma de México. This collaboration focuses on the use of algebraic topology to study the complexity of distributed algorithms. Algebraic topology tools have been mainly used for shared memory models. The purpose of the visit is to extend this research to distributed memory models. Professor Rajsbaum is partially funded by an invitational program from École Polytechnique. Meet him in office 4028a.

3.9.2021
Reza Naserasr and Zhouningxin Wang (IRIF) will present the notion of circular coloring of signed graphs, as a common extension of the circular coloring of graphs and the 0-free coloring of signed graphs. In this work, they consider the problem of finding the best upper bound of the circular chromatic number of restricted families of signed graphs. In particular, they show that every signed bipartite planar graph of negative-girth 6 admits a circular 3-coloring.

3.9.2021
Reza Naserasr (IRIF) is an invited speaker at the 29th Workshop on Cycles and Colourings. He will present a joint work with Lan Anh Pham (IRIF), Zhouningxin Wang PhD student (IRIF) and Xuding Zhu (University Jinchua): Density of C –4 -critical signed graphs. There is a classic one-to-one correspondence between (2k+1)-colorability of a graph and mapping of a specific subdivision of it to the (2k+1)-cycle. In this work they present an extension of this to 2k-coloring using homomorphisms of signed graphs.

3.9.2021
Amos Korman et Robin Vacus (IRIF) publient On the Role of Hypocrisy in Escaping the Tragedy of the Commons dans la revue Scientific Reports. Dans cet article, ils étudient l'émergence de la coopération dans le cadre formel de la théorie des jeux. Ils considèrent 3 comportements stéréotypés : “tricheur”, “hypocrite” et “coopératif”, et un modèle de pression sociale.

3.9.2021
Yiting Jiang (IRIF) and Jaroslav Nešetřil will present a result that there are infinitely many minimal asymmetric k-uniform hypergraphs.

3.9.2021
Guillaume Aubian, Pierre Charbit (IRIF) and Pierre Aboulker study the class of oriented graphs such that the out-neighbourhood of any vertex induces a transitive tournament and prove for it a decomposition theorem. As a consequence, they obtain that oriented graphs in this class have dichromatic number at most $2$ and satisfy Caccetta-Häggkvist conjecture.

1.9.2021
Three papers coauthored by IRIF Ph.D students will be presented at the European Conference on Combinatorics, Graph Theory and Applications. Topics include oriented graphs, asymmetric hypergraphs and bipartite planar graphs.

30.8.2021
El Mehdi Cherradi (IRIF) and Paul-André Melliès (IRIF) will present at Category Theory Conference 2021 their work on derivators, a clever tool introduced by Grothendieck to compute homotopy limits and colimits of spaces, exploring the idea that derivators should be understood as generalised categories.

27.8.2021
Claire Mathieu (IRIF) et ses collaborateurs publient les résultats de leur recherche Mitigating COVID-19 outbreaks in workplaces and schools by hybrid telecommuting dans le journal PLOS Computational Biology. Cet article l'impact de deux stratégies, dites de rotation et d’alternance, pour freiner l’épidémie de Covid-19 que ce soit dans une école ou un bureau. Lire l'article complet ici et le communiqué de presse du CNRS ici.

26.8.2021
Ahmed Bouajjani (IRIF), Javier Esparza, and Oded Maler have received the Concur Test-of-Time Award (period 1996-1999) for their article Reachability Analysis of Pushdown Automata: Application to Model-checking published at CONCUR 1997. Read the interview.

24.8.2021
Dans le cadre d’un mini-cours donné au 86ème séminaire Lotharingien de combinatoire, Guillaume Chapuy (IRIF) parlera d'un nouveau point de vue sur la correspondance entre cartes et tableaux de Young, qui joue un rôle fondamental en combinatoire algébrique. Ce nouveau point de vue, développé dans le cadre des polynômes de Jack et des surfaces non-orientables, est issu de ses travaux avec Maciek Dołęga (ancien postdoctorant à l'IRIF/LIAFA).

20.8.2021
Sander Gribling and Sven Polak (CWI) will present their ongoing work about the mutually unbiased bases problem. “What is the largest number of mutually unbiased bases in dimension d? We make progress on answering this fundamental question in quantum information theory using semidefinite programs and representation theory”.

26.7.2021
Le Hcéres lance la réalisation d’une synthèse disciplinaire nationale consacrée aux mathématiques. Valérie Berthé (IRIF) fait partie du comité des 16 personnalités chargées de rédiger un rapport de synthèse sur les mathématiques françaises. Lire le communiqué de presse.

19.7.2021
Simona Etinski, PhD student at IRIF is jointly in charge of one of the projects of The International Research School (IRS). In the project “The step towards optical computers”, the goal is to simulate a work of a device that is based on the laws of optics. Simona’s role, as a co-tutor in this project, is to help the students to finish their task and successfully present it at the end of the school. Watch here the video explaining the project.

19.7.2021
Sylvain Périfel and Mahsa Shirmohammadi (IRIF), Nikhil Balaji and James Worrell (University of Oxford) will present at ISSAC 2021 an article about Cyclotomic Identity Testing and Applications.

19.7.2021
Le colloque « Recent Advances on Quantum Computing » organisé par Frédéric Magniez (IRIF) et qui s'est tenu les 17 et 18 juin au Collège de France, est désormais disponible en ligne.

8.7.2021
Antonio Casares & Thomas Colcombet (IRIF) and Nathanaël Fijalkow (Labri) will present at ICALP 2021 their research about optimal transformations of Muller conditions.

8.7.2021
Thomas Colcombet and Arthur Jaquard (IRIF) will present at ICALP 2021 their paper about a complexity approach to tree algebras.

7.7.2021
Claire Mathieu (IRIF), Chien-chung Huang, Mathieu Mari and Jens Vygen will present at ICALP‘2021 an article about approximating maximum integral multiflows on bounded genus graphs.

30.6.2021
Sander Gribling (IRIF), Joran van Apeldoorn (Universiteit van Amsterdam), Yinan Li (Nagoya University) Harold Nieuwboer (Universiteit van Amsterdam), Michael Walter (University of Amsterdam) and Ronald de Wolf (University of Amsterdam) will present at ICALP'21 an article about quantum algorithms for matrix scaling and matrix balancing.

29.6.2021
Appel à candidatures | Prix de thèse Gilles Kahn patronné par l'Académie des Sciences et décerné par la Société informatique de France (SIF). Ce prix a pour objectif de promouvoir les jeunes talents les plus prometteurs de l'informatique fondamentale. Date limite de dépôt des candidatures : 14 septembre 2021.

28.6.2021
En relation avec le sujet du cours Information quantique, premières utilisations calculatoires : superposition, mesure, transformation, non-clonage, distribution quantique de clés, téléportation, Miklos Santha (IRIF) a donné un séminaire intitulé Le problème du sous-groupe caché. La rediffusion de ce séminaire (1h) est désormais disponible pour téléchargement.

21.6.2021
Un projet de vulgarisation scientifique, financé par l’IRIF, qui a pour but de fabriquer des objets interactifs pédagogiques et ludiques pour expliquer les bases de l'ordinateur quantique ? C'est le principe du projet QuBobs pensé par Sophie Laplante (IRIF) et Lou Vettier, designer indépendante.

18.6.2021
As part of the ANR Coregraphie project, a financed PhD thesis is proposed at IRIF on the modular decomposition of graphs with a view to their compression. More details here.

17.6.2021
Nicolas Behr (IRIF) and Joachim Kock (Universitat Autònoma de Barcelona), will present “Tracelet Hopf algebras and decomposition spaces”, selected paper for a distinguished presentation at the prestigious conference ACT 2021.

16.6.2021
Colloquium « Recent Advances on Quantum Computing » at Collège de France, June 17-18. This is a joint event between the Chaire Quantum Algorithms (2020-21) at Collège de France and the series of workshops Quantum In Paris. The goal of this colloquium is to bring together at College de France the research community in quantum computing.

14.6.2021
Troy Lee (CQT), Tongyang Li (University of Maryland), Miklos Santha (IRIF), Shengyu Zhang (CUHK) will present at CCC 2021 the paper « On the Cut dimension of a graph ».

9.6.2021
Paul-André Melliès (IRIF) will present at LICS 2021 an asynchronous template game semantics where the shuffle tensor product of asynchronous games is formulated for the first time as the Gray tensor product of 2-categories, with appropriate scheduling template.

9.6.2021
Claudia Faggian (IRIF) and Francesco Gavazzo (U. Bologna) will present at LICS21 a foundation for monadic rewriting, and its application to calculi with algebric effects.

8.6.2021
Invité sur la chaire annuelle Informatique et sciences numériques du Collège de France 2020-2021, le Professeur Frédéric Magniez discute de la naissance de l'écosystème de l'informatique quantique. Lisez son interview !

2.6.2021
Antoine Allioux (IRIF), Eric Finster (Cambridge University), and Matthieu Sozeau (Inria) will present at LICS 2021 a proof that types are infinity-groupoids internal to an extension of homotopy type theory allowing for the formalization of higher algebraic structures.

2.6.2021
Thomas Ehrhard (IRIF) and Farzad Jafarrahmani (Université de Paris) will present at LICS2021 the first categorical semantics of Linear Logic with induction and coinduction.

26.5.2021
IRIF has the great pleasure to welcome a new research scientist (CNRS) : Pierre-Evariste Dagand, an expert in language programming. Learn more about him and his work.

25.5.2021
Three papers coauthored by IRIF members will be presented at the CanaDAM conference 2021, May 25-28.

21.5.2021
Nuria Brede (University of Potsdam) and Hugo Herbelin (IRIF) will present at LICS21 a unified classification of choice and bar induction principles.

21.5.2021
Hugo Moeneclaey (IRIF) will present at LICS 2021 a construction semi-cubical models of type theory as cofree parametric models.

19.5.2021
Two papers coauthored by IRIF members will be presented at the Latin and American Algorithms, Graphs and Optimization Symposium (LAGOS), May 17-21.

18.5.2021
Ralph Sarkis (IRIF), Matteo Mio (LIP, ENS Lyon) and Valeria Vignudelli (LIP, ENS Lyon) will present at LICS2021 equational and metric reasoning tools for programs combining nondeterminism, probability and termination.

10.5.2021
Six papers coauthored by IRIF members will be presented at the prestigious conference ICALP’21 this summer.

10.5.2021
L'édition 2021 de Mathématiques en mouvement, organisée par la FSMP, aura lieu le mercredi 19 mai de 14h à 17h15 en visioconférence. Elle aura pour thème Maths et sport.

29.4.2021
IRIF will finance one or two additional Master scholarships in Foundations of Computer Science within the PGSM program of FSMP for female students who have completed a bachelor’s degree or the first year masters in one of the universities of the FSMP network. Apply online by May 8th.

29.4.2021
The Annual meeting of ANR-HOSIGRA, in collaboration with teams from India and China, will take place online May 3-6. The schedule of the talks is available here. Find abstracts and the zoom link here.

23.4.2021
Six papers coauthored by IRIF members will be presented at the prestigious conference LICS'21 this summer. Topics include game semantics, linear logic, categorical models, type theory and rewriting systems.

22.4.2021
Sylvain Perifel (IRIF) and Guillaume Lagarde (Université de Bordeaux) publish on the Blog Binaire the first article of a series about algorithmic complexity. The series aims be easy-to-understand and accessible to everyone.

9.4.2021
We are happy to welcome Mirna DŽAMONJA, winner of an individual grant Marie CURIE part of the H2020 European program. Learn more about her and her work here

7.4.2021
Stephen Wolfram, pioneer in the development and application of computational thinking, will be speaking on Wednesday April 28, 18:00 CET at GReTA special event co-organized by IRIF.

26.3.2021
The ANR projet MAVeriQ will be having its second kickoff meeting on Friday March 26th. It will be starting with 4 short scientific talks: Eugene Asarin (IRIF), Loïc Helouet (IRISA), Nicolas Basset (VERIMAG), Benoît Barbot (LACL). Anybody who is interested is kindly invited to attend.

20.3.2021
This year's PPS days will take place online on the afternoons of March 22, 23, 29 and April 1. There will be also two guest lectures on the mornings of March 23 and April 1 by Chantal Keller (LRI) and Pierre-Évariste Dagand (moving from LIP6 to IRIF).

12.3.2021
The GDR-IM days will take place (online) from March 23rd to 26th. 2 IRIF members are participating this year: Claire Mathieu (Tuesday, March 23-9:00 am) and Michele Pagani (Wednesday, March 24-10:15 am).

9.3.2021
Mélodie Lapointe, Simona Etinsky and Zeinab Nehaï, doctoral and post-doctoral students at IRIF took part in a Q&A session with Eva Ryckelynck (Head of administration at IRIF) and Valérie Berthé (Senior Research Scientist-CNRS). They talked about their career as women in the field of computer science.

23.2.2021
We (IRIF) are proud to announce that we collectively finalised our Charter/Code of conduct for a secure professional environment open to diversity.

18.2.2021
A new experimental demonstration of quantum advantage, co-authored by Iordanis Kerenidis (IRIF, CNRS), is published in Nature Communications. To learn more (in French): the CNRS press release, an article in CNRS journal, an article in L'usine nouvelle, an article in Industrie & Technologies, a radio interview of Iordanis Kerenidis on France Info.

10.2.2021
The ANR Probabilistic Programming Semantics (PPS) meeting will take place online from Feb 16 to Feb 18, 2021 and will be joined with the 4th edition of the PIHOC workshop series and with a Dal Lago's DIAPASoN ERC project meeting. More on the program and connexion details at

29.1.2021
Three tenured positions in theoretical computer science in Paris: two associate professorships and one full professorship are open; teaching at the CS dept. of Université de Paris, research at IRIF; deadline for applications Feb. 26, 2021.

29.1.2021
Juliusz Chroboczek, Sophie Laplante and Sylvain Perifel (IRIF) are grant recipients for a project aiming to enhance the students' experience in virtual classrooms.

22.1.2021
French president Emmanuel Macron has presented a national plan for quantum technologies, including some aspects of quantum computing and communications. This is based on a parliamentary report co-written by Iordanis Kerenidis. More from CNRS including a special edition on the quantum revolution.

22.1.2021
IRIF is associated to two projects selected under the call “Émergence en Recherche” of Université de Paris: IDiLL, co-instigated by Michele Pagani with LIPN, and SPECTRANS by Jean-Baptiste Yunès with CLILLAC-ARP and LIPADE.

15.1.2021
V. Berthé (IRIF) & J. Barral spearhead the creation of 𝘎𝘋𝘙 Multifractal analysis and self-similarity as a renewal of `GDR Multifractal analysis' with a move towards symbolic dynamic systems.

5.1.2021
Geoffroy Couteau (IRIF), Pooya Farshim (University of York), and Mohammad Mahmoody (University of Virginia) will present at ITCS 2021 a new framework for proving black-box separations in cryptography in a composable way.

4.1.2021
Frédéric Magniez (IRIF CNRS member) holds the 2020–2021 chair on Computer Science at Collège de France (in partnership with Inria), where he will present a course on Quantum Algorithms starting April 7th with an Inaugural lecture on April 1st. Poster with full program.

4.1.2021
P. Fraigniaud (IRIF), F. Le Gall (Nagoya University), H. Nishimura (Nagoya University), and A. Paz (Universität Wien) will present at ITCS 2021 a quantum approach of distributed certification, for checking the consistency of large data sets replicated at several nodes of a network.

23.12.2020
Galène, the videconferencing server developed by Juliusz Chroboczek (IRIF), is now free and open source software. Talk and demonstration during the IRILL seminar on March 11th, 4pm.

22.12.2020
A group of researchers from Chennai, Paris, and Uppsala, including Ahmed Bouajjani from IRIF, will publish at POPL 2021 the first decidability result for verifying concurrent programs over Persistent Memories. Another contribution of the article is a new formal model for the persistent Intel x86 architecture.

22.12.2020
Ugo Dal Lago (Univ. Bologna), Claudia Faggian (IRIF), and Simona Ronchi Della Rocca (Univ. Torino) will present at POPL 2021 a type system to characterize probabilistic termination and (exact) expected runtime of programs in the context of higher-order probabilistic computation.

21.12.2020
Damiano Mazza (LIPN) and Michele Pagani (IRIF) will present at POPL 2021 the first proof of the almost everywhere correctness of automatic differentiation in the context of a higher-order, Turing-complete programming language.

4.12.2020
December 10-11, IRIF is co-organizing SOCS2020, a workshop on Species and Operads in Combinatorics and Semantics. This event will gather two very active communities in Paris area and beyond, the combinatorics and semantics communities, around a common tool: species and operads theory.

25.11.2020
Pierre-Louis Curien (IRIF) is awarded with this year's Grand prix Inria – Académie des sciences. To learn more about Pierre-Louis Curien's contributions to theoretical computer science, read the portrayal published by Inria, and the interviews published by FSMP and La Recherche, or watch the interview by Université de Paris.

20.11.2020
Delia Kesner (IRIF) has been elected corresponding member for information sciences of the Accademia delle Scienze di Torino.

20.11.2020
Three papers co-authored by IRIF members will be presented at POPL2021, the main conference on programming languages and programming systems. The papers' study randomized computation, including machine learning, and verification for programs over persistent memory.

6.11.2020
A paper by C. Mathieu (IRIF CNRS member) with R. Rajaraman, N. Young, and A. Yousefi will be presented at SODA2021 on dynamization policies in the competitive analysis framework for log-structured merge trees underpinning industrial NoSQL databases.

6.11.2020
A paper by G. Couteau (IRIF CNRS researcher) and D. Hartmann has been presented at the conference CRYPTO2020 and describes new, more compact constructions of non-interactive zero-knowledge proofs in elliptic curves equipped with a bilinear map.

2.11.2020
IRIF has the great pleasure to welcome a new research scientist (CNRS): Nicolas Behr, an expert in stochastic rewriting theory.

21.10.2020
A paper by E. Boyle, G. Couteau (IRIF CNRS researcher), N. Gilboa, Y. Ishai, L. Kohl and P. Scholl has been resented at the conference CRYPTO2020 on how to securely generate bounded amounts of correlated randomness.

21.10.2020
A paper by Troy Lee, Miklós Santha (IRIF CNRS member), and Shengyu Zhang on quantum algorithms for graph problems with cut queries will be presented at SODA2021.

15.10.2020
Liat Peterfreund (former IRIF postdoc, 2019-20) is one of the recipients of the L'Oréal-Unesco award for women in science. Liat is studying the science of data processing: how to extract data, how to classify it and, above all, how to make it meaningful.

2.10.2020
IRIF is seeking excellent candidates for about 10 postdoctoral positions in all areas of the foundations of Computer Science. Deadline for applications: Nov. 2, 2020.

1.10.2020
IRIF has the great pleasure to welcome a new research scientist (CNRS): Adrian Vladu, an expert in continuous optimization, which he uses to develop improved algorithms for combinatorial problems and methods for machine learning.

30.9.2020
This year's PPS days will take place online on October 1, 8, and 15, each time between 10:20 and 12:30.

21.9.2020
Via DIMs of Math and Infos, IRIF is one of the lab of the Paris Region Fellowship Program, a project aimed at strengthening the research capacity and international influence of Paris region, attracting excellent researcher and fostering innovation.

15.9.2020
IRIF has the great pleasure to welcome a new associate professor (Université de Paris): Mikael Rabie, an expert in Distributed Computing, in particular on population protocols and distributed models on graphs.

11.9.2020
Thomas Vidick will give a series of lectures on Interactive proofs with quantum devices during his stay at IRIF funded by an FSMP chair, starting on Sep. 22 at IHP.

4.9.2020
Baptiste Louf (just graduated from IRIF) has a paper co-authored with Thomas Budzinski published in Inventiones Mathematicae that proves a conjecture of Benjamini & Curien in discrete random geometry.

1.9.2020
The One World Numeration Seminar is an international online seminar on numeration systems and related topics organised by Wolfgang Steiner (IRIF). It has been well accepted by the community, and the second season starts with a talk by Bill Mance on September 1st.

28.8.2020
Delia Kesner (IRIF) will be on the panel of a debate on the future of the conference system in theoretical computer science, and organized as a special event as part of the Online Worldwide Seminar on Logic and Semantics (OWLS). The event will take place September 2, 5pm on Zoom.

18.8.2020
Iordanis Kerenidis (IRIF) was an invited speaker at International Conference on Machine Learning (ICML) in July 2020 for a talk on Quantum Machine Learning: prospects and challenges followed by a discussion with other experts in the field. Watch him online.

18.8.2020
IRIF is very pleased to host for 4 months starting on March 2021, David Peleg, professor at the Weitzmann Institute of Science whose research focuses on algorithms, communication networks, complex and distributed systems on a chair funded by FSMP.

18.8.2020
IRIF is very pleased to host for 12 months starting in September 2020, Thomas Vidick, professor of computer science and mathematics at the California Institute of Technology. His research is at the interface of theoretical computer science, quantum information and cryptography. The invitation is funded by an FSMP chair together with DIENS, Inria and IRIF. Meet him in office 4024.

16.7.2020
Enka Blanchard, Ph.D. student at IRIF supervised by Nicolas Schabanel and Ted Selker, was awarded the PSL prize in the category “interfaces between humanities and sciences” for her Ph.D. work entitled “Usability low tech, high security”.

6.7.2020
The members of the CS department and the laboratory IRIF of Université de Paris voted in favor of a motion requesting the withdrawal of the LPPR project.

25.6.2020
Tommaso Petrucciani is awarded the GPL PhD Thesis Prize (Software Engineering and Programming) for his thesis“ “Polymorphic set-theoretic types for functional languages” prepared at IRIF co-supervised by Giuseppe Castagna (IRIF) and Elena Zucca (Università di Genova).
Polymorphism and set-theoretic types

22.6.2020
Amos Korman (IRIF) will give a talk for receiving the 2020 prize of innovations in distributed computing. It will be broadcast live on Tuesday, June 30, at 7-8 pm (CET). Watching the talk is free of charge, but registration is required.

22.6.2020
Sylvain Schmitz (IRIF) co-organizes the 14th International Conference on Reachability Problems (RP'20), that is planned to take place either online or at IRIF on October 19-20.

15.6.2020
Members of IRIF organize the fifth International Conference on Formal Structures for Computation and Deduction (FSCD) and its affiliated workshops. The event was planned in Paris, due to the pandemic, it is now an online conference held from 06-29 to 07-06.

22.5.2020
Jean Krivine (IRIF) discusses how to model an epidemy with Samuel Alizon (MIVEGEC) in a video for Sciences Pop’ Saint-Denis, an association for popular education.

20.5.2020
Amos Korman (IRIF) has been awarded the 2020 Prize for Innovation in Distributed Computing. The prize will be given during the SIROCCO 2020 conference in July.

11.5.2020
Thomas Colcombet and Hugo Férée (IRIF) together with Antoine Amarilli and Thomas Schwentick administrate the website for the TCS4F Manifesto, an initiative to reduce the carbon footprint related to Theoretical Computer Science research activities.

11.5.2020
IRIF PhD student Simon Mauras had a paper accepted at the EC 2020 conference, “Two-Sided Random Matching Markets: Ex-Ante Equivalence of the Deferred Acceptance Procedures”

11.5.2020
An online ANR-HOSIGRA 2020 meeting will be held on Tuesday May 12, 14:00-17:00 with a possibility of further discussions on the following days. If interested in joining the meeting, please contact Reza Naserasr.

30.4.2020
The One World Numeration Seminar, a new international online seminar on numeration systems and related topics, is organised by Wolfgang Steiner (IRIF) and hosted at IRIF. It starts on May 5 with a talk by Narad Rampersad.

27.4.2020
At ICALP'20, Raphaëlle Crubillé (IMDEA Software Institute and IRIF), with Boaz Barak and Ugo Dal Lago take a look at how higher-order cryptography could look like, giving both positive and negative results on higher-order generalizations of pseudorandomness constructions.

27.4.2020
Claire Mathieu (IRIF) has been interviewed by the online news site of CNRS about using graphs to devise a lockdown exit strategy.

23.4.2020
In the context of quantum cloud computing, Frédéric Magniez (IRIF) with Ashwin Nayak (U. Waterloo) will introduce at ICALP'20 a fundamentally new and more efficient solution than classical ones to decide if there is inconsistency between 2 or more remote quantum databases.

23.4.2020
Thomas Colcombet (IRIF) with David Barozzini, Lorenzo Clemente and Paweł Parys (Univ Warsaw) will virtually present at ICALP'20 how to compute downward closures of safe recursion schemes, objects that give meaningful information about the behavior of higher order programs. This paper got the best paper award of ICALP/Tack-B.

23.4.2020
Pierre Fraigniaud (IRIF) and Ami Paz (U. Vienna, Austria) will virtually present at ICALP'20 how to model distributed computing in networks in the framework of algebraic topology, where algorithms are characterized as simplicial maps between complexes.

20.4.2020
Six papers coauthored by IRIF members will be presented at the prestigious conference LICS'20 this summer. Topics include the semantics of probabilistic and nondeterministic programming languages, as well as extensions of the proof-program correspondence to classical logic.

17.4.2020
Four papers coauthored by IRIF members will be presented at the prestigious conference ICALP'20 this summer. Topics include automata, cryptography, networks, and quantum computing.

15.4.2020
John Horton Conway passed away at 82 on 04-11 from COVID. Mathematician with an impressive spectrum of expertise, his influence on theoretical computer science is decisive from cellular automata to paving. Valérie Berthé (IRIF) wrote a note for La Recherche.

7.4.2020
The first virtual workshop co-organized by a member of IRIF, Valérie Berthé, took place March 23-27 on Multidimensional Continued Fractions and Euclidean Dynamics. All talks have been recorded and are publicly accessible.

7.4.2020
All seminars of IRIF are now active again through BigBlueButton, an open source solution installed on our local servers thanks to our amazing staff support. Check out our page about seminars for more information.

7.4.2020
The OCaml MOOC developed by Ralf Treinen, Roberto Di Cosmo and Yann Régis-Gianas from IRIF is reopened during COVID19 sheltering. Use this time at home to learn functional programming!

5.3.2020
We are delighted to host Joseph Mitchell (Stony Brook University) as part of our IRIF Distinguished Talks Series on March 20, 10:30 for a talk entitled “Approximation Algorithms for Some Geometric Packing/Covering/Routing Problems”.

27.2.2020
Two papers co-authored by IRIF members will be presented at PLDI'20, the main conference on implementations of programming languages. The papers propose new methodologies for verifying distributed protocols and smart contracts running on top of blockchains, respectively.

7.2.2020
IRIF will finance one or two additional Master scholarships in Foundations of Computer Science within the PGSM program of FSMP for female students who have completed a bachelor’s degree or the first year masters in one of the universities of the FSMP network. Apply by May 8th.

6.2.2020
Sylvain Périfel from IRIF, together with Damiano Mazza and Thomas Seiller, organize the Caleidoscope Research School in Computational Complexity, to be held in Paris (postponed to 2021).

30.1.2020
Yann Régis-Gianas (IRIF) is the vice-president of the “Journées Francophones des Langages Applicatifs” that will take place at Gruissan from the 29th of January to the 1st of February.

27.1.2020
The ANR PPS kick-off meeting will take place from Feb 26 to Feb 28, 2020 at IRIF (Paris) and will be joined with the 3rd edition of the PIHOC workshop series initiated by Ugo Dal Lago in 2018 and with Dal Lago's DIAPASoN ERC project kick-off meeting. Register by Jan 31: registration is free but mandatory.

21.1.2020
The ASD day of « Algorithms and discrete structures » pole will take place in room 3052 on January 27th.

15.1.2020
IRIF has the great pleasure to welcome a new starting researcher (Inria): Emilio J. Gallego Arias, an expert in interactive theorem proving and the Coq proof assistant.

13.1.2020
Iordanis Kerenidis, CNRS senior researcher (IRIF) and director of the Paris Centre for Quantum Computing, is one of the three authors of the report about Quantum Technologies requested by the French government.

10.1.2020
Université de Paris has opened one permanent associate professor position in Computer Science. Recruited researcher will join IRIF. Apply by April 9th, 4pm (Paris time).

10.1.2020
IRIF has the great pleasure to welcome a new research scientist (CNRS): Matthieu Josuat-Vergès, an expert in enumerative combinatorics and algebraic combinatorics.

7.1.2020
Claire Mathieu and Simon Mauras (IRIF) will present at SODA’20 several approximation algorithms for top-list aggregation, an optimization problem from the field of information retrieval: compute the output full-ranking which is closest to a collection of input top-lists.

7.1.2020
Guillaume Ducoffe (Bucarest Univ. and ICI) will present at SODA’20 a result obtained with Michel Habib (IRIF) and Laurent Viennot (IRIF and Inria) showing that diameter can be computed in truly sub-quadratic time in any H-minor free graph. This extends a recent breakthrough on planar graphs.

6.1.2020
We are delighted to host as part of our IRIF Distinguished Talks Series Martin Grohe (RWTH Aachen University) on Friday January 24, 2020, 10:30am for a talk entitled “Symmetry and Similarity”.

23.12.2019
IRIF is proud to announce that Claire Mathieu, senior research scientist at IRIF, has been elected at the Académie des sciences for the section of mechanical engineering and computer science.

13.12.2019
Raphaëlle Crubillé (former student at IRIF)‬⁩ was awarded the Gilles Kahn 2019 prize for her PhD thesis entitled « Behavioral Distances for Probabilistic Higher-order Programs » supervised by Thomas Ehrhard (IRIF) and Ugo Dal Lago.

11.12.2019
Two papers coauthored by IRIF members will be presented at POPL’20, the main conference on programming languages and programming systems. The papers' topics are reflecting Coq in Coq and how to differentiate higher-order programs.

10.12.2019
Michele Pagani (IRIF), Alois Brunel (Deepomatic) and Damiano Mazza (LIPN) will present at POPL'20 an effect-free extension of the backpropagation algorithm to higher-order functional programming, allowing for a logical understanding of its dynamics thanks to linear logic.

20.11.2019
Yann Regis-Gianas (IRIF) co-organizes at IRIF the workshop “Tezos Smart Contrat Languages and Formal Verification” on the 21 and 22 of November. Registration is free but mandatory.

7.11.2019
What are near-term quantum computers good for? Iordanis Kerenidis (IRIF) will give a talk on 11/29 in a meeting organized by the DIM Sirteq where Google will present its recent results about quantum supremacy. Registration is free but mandatory.

1.11.2019
IRIF hosts the annual meeting of the molecular bioinformatics research group of CNRS (GDR BIM) from 11-05 to 11-07.

29.10.2019
Walter FONTANA (MedSchool Harvard) holds the annual chair of Collège de France on the theme “Life and the Computer: The Challenge of a Science of Organization”. The lectures and seminars started since the 10-24. Jean Krivine (IRIF) will give a seminar the 11-22.

23.10.2019
Marie Kerjean (former IRIF PhD student) is one of the recipients of the L'Oréal-Unesco award for women in science. Marie is building a bridge between logic, programming, and physics using functional analysis to model proofs, and types to understand analysis.

16.10.2019
On December 16th, a half-day of talks aimed at a non-specialized audience will take place at IRIF in celebration of Algorithms, the research domain of Claire Mathieu, 2019 recipient of a CNRS Silver Medal. The event will conclude with a discussion of new research directions in Algorithms. Free Registration before November 30th.

8.10.2019
Talks of the IRIF Distinguished Talks Series for the coming academic year have been scheduled. Save the dates: January 24, March 20 and June 20. Speakers will be Martin Grohe (RWTH Aachen University), Joseph Mitchell (State University of New York at Stony Brook), Simon Peyton Jones (Microsoft Research at Cambridge, England).

8.10.2019
The SODA 2020 conference will include a paper by Vincent Cohen-Addad (LIP6), Frederick Mallmann-Trenn (King's College) and Claire Mathieu (IRIF) about computing with noisy data. The problem: select valuable objects in a setting where each assessment has a probability of error, using redundant assessments.

8.10.2019
Researchers of IRIF are participating in the “Fête de la Science”! Meet them at the University of Paris October 10-11 to better understand the first principles of computing!

8.10.2019
From ancient history to quantum, learn about cryptography at “Fête de la science” in an entertaining talk by Sylvain Perifel (IRIF) Friday October 11th, 11am at Amphitheater 4C, Halle aux farines.

2.10.2019
IRIF has the great pleasure to welcome a new associate professor (Université de Paris): Hugo Férée, an expert in various aspects of complexity theory, with interests in programming languages and formal proofs.

1.10.2019
IRIF has the great pleasure to welcome a new research scientist (CNRS): Geoffroy Couteau, an expert in cryptography, with a focus on secure computation protocols and zero-knowledge proofs.

25.9.2019
Three papers coauthored by IRIF members will be presented at SODA’20, the main conference in algorithm design. Topics include the study of noisy models, aggregate rankings, and graph diameters.

25.9.2019
IRIF has the great pleasure to welcome a new associate professor (Université de Paris): Sam Van Gool, an expert in algebraic and topological methods for automata, logic, and model theory.

24.9.2019
IRIF has the great pleasure to welcome a new professor (Université de Paris): Sylvain Schmitz, an expert in logic and verification, and especially in problems of astronomical computational complexity.

24.9.2019
IRIF has the great pleasure to welcome a new associate professor (Université de Paris): Valia Mitsou, an expert in algorithms and complexity, particularly in structural parameterizations and fine grained complexity.

23.9.2019
Giuseppe Castagna (IRIF) and Jeremy Siek (Indiana) organize WGT 2020, the first ACM SIGPLAN Workshop on Gradual Typing, colocated with POPL. Submission deadline: Monday, October the 21st.
gradual typing

18.9.2019
From September 30th to October 21st, Leonid Libkin (University of Edinburgh) will give a series of 7 courses related to his FSMP Chair on the topic of A modern theory of database query languages each Friday 10:30-12:00 at IRIF, room 3052.

17.9.2019
Giuseppe Castagna (IRIF) and his coauthors Mariangiola Dezani, Elena Giachino, and Luca Padovani (Università di Torino) will receive on October the 8th at PPDP 2019 the Most Influential Paper 10-Year Award for their paper Foundation of Session Types presented at PPDP 2009.
Session Types

17.9.2019
IRIF is having its back-to-work-day on October 1st. In the morning, there will be a welcome session for new PhD students, postdocs and TA, and in the afternoon a series of talks given by new faculty and CNRS members.

11.9.2019
A. Balliu and D. Olivetti (former IRIF PhD students), J. Hirvonen and M. Rabie (former IRIF postdocs), with S. Brandt and J. Suomela broke an old lower bound open question on Maximal Matchings. Their paper will be presented at FOCS as Best Paper.

10.9.2019
IRIF is seeking excellent candidates for about 10 postdoctoral positions in all areas of the Foundations of Computer Science. Deadline for applications: Nov. 3, 2019.

6.9.2019
It is with great sadness that we learnt the passing of our collegue Patrick Dehornoy on September the 4th. IRIF had the chance to count this exceptional mathematician amongst its associate members. He will be terribly missed by all his colleagues and it is a great loss for the whole scientific community.

3.9.2019
IRIF has the great pleasure to welcome Leonid Libkin, professor at University of Edinburgh, who is visiting for three months. His stay is financed by an FSMP chair. Leonid is an expert in data management and applications of logic in computer science. Meet him in office 4048.

26.8.2019
The PPS days will happen in the Turing amphiteater the 2nd and 3rd of September.

14.7.2019
A workshop on Graph Compression and Compact Representations will take place at IRIF on September 9-10. Submit your talk proposal before the 25th of August.

14.7.2019
A scientific meeting in honor of Pierre-Louis Curien will take place at IRIF, in the amphiteater 4C, Halle aux Farines building on the 6th of September. Registration is free but mandatory.

28.6.2019
IRIF is celebrating the end of the academic year on the 4th of July at Amphi Pierre-Gilles de Gênes, building Condorcet with a talk at 4.00 by Emmanuelle Frenoux about computer science and the environment, and another at 5.00 by Anne Siegel about gender balance.

21.6.2019
A summer school CIMPA entitled “Algorithmic and statistical approaches to machine learning” co-organized by Vlady Ravelomanana will take place at the University of Antananarivo from the 16th to the 25th of July 2019.

11.6.2019
Kamil Khadiev from Kazan University, an expert in complexity and quantum computing, is visiting IRIF from June 10th to July 9th.

30.5.2019
Four papers coauthored by IRIF members will be presented at the prestigious conference CAV'19 in New York this summer. Topics include verifying weakly-consistent distributed databases, testing cache coherence protocols, and testing concurrent objects.

25.5.2019
Mikaël Rabie (Postdoc at IRIF) will present at ICALP'19 a new problem, about distributed reconfiguration of maximal independent sets, providing an optimal algorithm to produce a reconfiguration schedule in the LOCAL model. This work, receiving Best Paper award in Track C, is a joint work with Keren Censor-Hillel from the Technion (Haifa, Israël).

10.5.2019
IRIF is proud to announce that Constantin Enea, associate professor of Université de Paris and researcher at IRIF, was appointed junior member of IUF. This appointment will allow him to develop a research project concerning rigorous engineering of distributed databases.

9.5.2019
Claire Mathieu, Amaury Pouly and Yann Régis-Gianas from IRIF gave talks at the conference of French preparatory schools to science and engineering curriculum in May 6-10, contributing to the ongoing important changes in Computer Science education in French high-schools and higher-education systems.

7.5.2019
Claire Mathieu from IRIF explained what algorithms are and what is their history to a national French radio broadcast show about Philosophy.

26.4.2019
Seven papers coauthored by IRIF members will be presented at the prestigious conference ICALP'19 in Patras this summer. Topics include automata, games, graphs, quantum computing, randomized complexity, and semigroups.

23.4.2019
The Spring session of Graph Theory in Paris will be held on Friday April 26 at Amphi Turing. Speakers of the event: Penny Haxell from U. Waterloo and Patrice Ossona de Mendez from CNRS.

23.4.2019
Sergio Rajsbaum from Universidad Nacional Autonoma de Mexico, a world-renowned expert in the theory of distributed computing, is visiting IRIF from March 31st to May 2nd.
Distributed systems

19.4.2019
Iordanis Kerenidis (IRIF) explains what we can expect from Quantum Computing in this interview of the CNRS journal.

19.4.2019
Université Paris Diderot has opened several teaching assistant positions (ATER) in Computer Science on the research topics of IRIF. Deadline to apply : May 6, 2019.

19.4.2019
Three papers coauthored by IRIF members will be presented at the prestigious conference LICS'19 in Vancouver this summer. Topics include sequent calculus, differential logic and probabilistic computation.

16.4.2019
Ali Charara, director of INS2I at CNRS, visits IRIF on the morning of April 24th. The research conducted at IRIF will be presented as well as 6 specific scientific talks. The visit will be followed by a light buffet lunch.

8.4.2019
We are very pleased to host as part of our IRIF Distinguished Talks Series Johan Håstad (Royal Institute of Technology, Stockholm) on April 12, 10:30 for a talk entitled “Switching lemmas in the 80ies and today”.

8.4.2019
Two IRIF members (Ahmed Bouajjani and Pierre Fraigniaud) will give a talk at the Workshop on Taking Stock of Distributed Computing at College de France, Friday April 12.

5.4.2019
Penny Haxell from University of Waterloo (Canada), a world wide expert in extremal combinatorics and graph theory, is visiting IRIF March 28th to May 2nd.
Extremal combinatorics

26.3.2019
The ANR project DISTANCIA about graph metrics is organizing a workshop at IRIF on the 27, 28 and 29 of March in room 366A of Bâtiment Condorcet.

17.3.2019
The Paris Region PhD2 program will grant 30 PhD projects on Digital Sciences and with an industrial partner. IRIF is an eligible hosting lab. Call for application is open until May, 15th 2019.

15.3.2019
From March 20th to May 22nd, Uri Zwick (Univ. of Tel Aviv) will give a series of 7 courses related to his FSMP Chaire of Excellence on the topic of Games on Graphs and Linear Programming Abstractions each Wednesday 2:15pm - 4:15pm at IRIF, room 3052.
Linear programming

14.3.2019
Université Paris Diderot has opened four permanent positions in Computer Science (1 professor and 3 assistant professors). Recruited researchers will join IRIF.

14.3.2019
FSMP offers 21 PhD student positions in Maths and TCS under H2020 COFUND project MathInParis. As a member of the FSMP network, IRIF is an eligible hosting lab. Call for application is open until April, 1st 2019. Applicants must be international students, but master students already in France for less than a year are eligible.

5.3.2019
The Collège de France and IRIF are delighted to host as part of our IRIF Distinguished Talks Series Robert Tarjan (Princeton) on March 18, 17:00 for a talk entitled “Concurrent Connected Components”

19.2.2019
Amaury Pouly (IRIF) with François Fages, Guillaume Le Guludec and Olivier Bournez were awarded the prize "La Recherche": they have shown that chemical reactions, as the ones taking place in cells, can simulate Turing machines. Chemical reactions are universal computers.

15.2.2019
In collaboration with Yoav Rodeh (Weizmann Institute of Science), Pierre Fraigniaud and Amos Korman from IRIF published a paper in the Journal of the ACM entitled “Parallel Bayesian Search with no Coordination”.

15.2.2019
Fabian Reiter (former student at IRIF) wrote a short popularisation article in the Blog Binaire of the newspaper Le Monde. This article explains (in French) some aspects of his PhD thesis, recently awarded the Honorable Mention of the Gilles Kahn prize.

4.2.2019
IRIF has the great pleasure to welcome Sandra Alves, assistant professor at University of Porto and expert in type-theory, rewriting, and fundamental calculi, who is visiting the IRIF until the 8th of February.

1.2.2019
Enrica Duchi and Guillaume Chapuy (IRIF) organise February the 15th in Amphi Turing, a map day (Journée cartes) dedicated to combinatorial and probabilistic aspects of maps.

1.2.2019
Carole Delporte (IRIF) will give a seminar at Collège de France as part of the annual Chair of Rachid Guerraoui (EPFL) on Distributed Algorithms, March 1.

1.2.2019
IRIF has the great pleasure to welcome Uri Zwick, professor at the Blavantik School of Computer Sience (University of Tel-Aviv), who is visiting for four months. His stay is financed by an FSMP chair. Uri is an expert in algorithms, data structures and games. Meet him in office 4048.

30.1.2019
The next meeting of the ANR project FREDDA (FoRmal mEthods for the Design of Distributed Algorithms) will happen at IRIF, Monday 4th and Tuesday 5th February 2019, room 3052.

23.1.2019
A CIMPA school on Graphs, Algorithms and Randomness is co-organized by Reza Naserasr from IRIF at Tabriz University, 15-22 June 2019. Three colleagues from IRIF, Pierre Fraigniaud, Michel Habib and Frédéric Magniez, are among the five lecturers from France.

23.1.2019
FILOFOCS (French-Israeli Laboratory on Foundations of Computer Science), the first International Joint Unit in Israel, was just created by CNRS, Univ. Paris Diderot, Tel-Aviv Univ., Hebrew Univ. of Jerusalem and Weizmann Institute. IRIF hosts its “mirror site” in France, and Adi Rosén from IRIF is deputy director.

17.1.2019
Guillaume Chapuy and Enrica Duchi from IRIF coorganize with Christina Goldschmidt (Oxford) the Journées Aléa 2019, a CNRS thematic school about discrete random structures, from 03-18 to 03-22 at CIRM. Register by January 23.

17.1.2019
Pierre Fraigniaud from IRIF organizes the Workshop Complexity and Algorithms (CoA), in the framework of GdR IM, Roscoff, France, April 1-5, 2019. The objective of this workshop is to gather the French community on design and analysis of algorithms, of all forms. Deadlines: submission by 01/02/2019, registration by 02/03/2019.

16.1.2019
Giuseppe Castagna, Victor Lanvin, Tommaso Petrucciani from IRIF present this week at POPL19 a paper coauthored with Jeremy Siek (Indiana university) about a new formal framework for gradual typing allowing a smoother and more declarative integration of gradual typing in existing programming languages.

10.1.2019
The day of the ASV pole will take place Monday January 21.

9.1.2019
IRIF has the great pleasure to welcome Jeremy Siek, professor at Indiana University Bloomingtom, who is visiting IRIF for five months. Jeremy is the creator of gradual typing and a world-renowed expert in typed programming languages. Meet him in office 4034a.
gradual typing

8.1.2019
IRIF has the great pleasure to welcome a new researcher (CNRS), Amaury Pouly, an expert in continuous models of computations, and the analysis and verification of continuous/hybrid dynamical systems.

1.1.2019
Christine Tasson (IRIF) will give a seminar at Collège de France as part of the lectures of Xavier Leroy (Collège de France) on Software Science, January 23.

21.12.2018
Frederic Magniez (IRIF) will present at QIP 2019 a quantum distributed algorithm to compute the diameter of a quantum distributed congested network. This is the first quantum distributed algorithm that overcomes classical algorithms for this task.

19.12.2018
Fabian Reiter now at LSV was awarded the Honorable Mention of the Gilles Kahn prize for his PhD Distributed Automata and Logic supervised by Olivier Carton at IRIF.

13.12.2018
Constantin Enea (IRIF) will present at POPL 2019 a methodology for specifying software modules whose operations satisfy multiple consistency levels. This work has revealed previously unknown documentation errors and bugs in Java concurrent objects.

9.12.2018
The Alexander von Humboldt Foundation has honored Ahmed Bouajjani (IRIF) with the prestigious Carl Friedrich von Siemens Research Award, in recognition of his research contributions.

3.12.2018
Maybe you are an eager bitcoin miner? Maybe you are a fan of quantum computing too, and you wonder what will change in the mining competition when done by quantum computers? Find some answers in a paper coauthored by Miklos Santha (IRIF) to be presented at ITCS’19.

1.12.2018
Hugues Fauconnier (IRIF) will give a seminar at Collège de France as part of the annual Chair of Rachid Guerraoui (EPFL) on Distributed Algorithms, December 21.

1.12.2018
Matthieu Sozeau (IRIF) will give a seminar at Collège de France as part of the lectures of Xavier Leroy (Collège de France) on Software Science, December 12.

29.11.2018
Constantin Enea from IRIF organizes with Ruzica Piskac (Yale University), the 20th International Conference on Verification, Model Checking, and Abstract Interpretation (VMCAI 2019). The conference is preceded by a winter school on formal methods.

21.11.2018
Two papers coauthored by IRIF members will be presented at ITCS’19, a prestigious conference to promote research that carries a strong and innovative conceptual message in TCS. Topics include communication complexity and quantum dueling algorithms.

20.11.2018
One paper coauthored by Laurent Feuilloley while he was PhD student at IRIF will be presented at SODA’19, the main conference in algorithm design. The paper provides lower bounds for the fundamental problem of text indexing with mismatches and differences using the Strong Exponential Time Hypothesis.

20.11.2018
Two papers coauthored by IRIF members will be presented at QIP’19, the main conference for theoretical quantum information research. Topics include efficient quantum algorithms for both algebraic and distributed problems.

19.11.2018
IRIF has the great pleasure to welcome Mahsa Shirmohammadi, researcher scientist (CNRS) from LIS, who is visiting IRIF for six months and who is an expert in the analysis and verification of timed, counter and probabilistic systems.

17.11.2018
Four papers coauthored by IRIF members will be presented at POPL’19, the main conference on programming languages and programming systems. The papers' topics are game semantics, proof theory, gradual typing, and consistency for concurrent computations.
Games, gradual typing, proofs, consistency

12.11.2018
IRIF and PCQC are partners in the EU Flagship project Quantum Internet Alliance (QIA) and in charge of delivering the QIA's blueprint for the future of quantum communications. The EU selected nineteen research projects, and ten of them are based on French teams.

10.11.2018
We are delighted to host as part of our IRIF Distinguished Talks Series Maurice Helihy (Brown University) on Nov. 16, 10:30 for a talk entitled “Atomic Cross-Chain Swaps”.

10.11.2018
The first meeting of the French-Chinese research project Verification Interaction Proof will take place in Paris at IRIF on November 19-24. Registration is free but mandatory.

10.11.2018
The last plenary meeting of GDRI Logique Linéaire takes place at IRIF, December 3-5. The program consists of talks given by members of the GDRI.

9.11.2018
The first session of a series of seminars Graph Theory in Paris will be hosted by IRIF. There will be two seminars by Monique Laurent and Lex Schrijver on November 23, at 2pm, in Amphi Turing of Sophie Germain building.

5.11.2018
The Journées PPS 2018 will take place on Thursday 8 and Friday 9 November, room 3052, building Sophie Germain.

5.11.2018
Amélie Gheerbrand and Cristina Sirangelo from IRIF co-organize with L. Libkin, L. Segoufin, and P. Senellart, the 2019 Spring School on Theoretical Computer Science (EPIT) on Databases, Logic and Automata, to happen the 7-12 April 2019 in Marseille. Preregistration before 13 January 2019.

12.10.2018
IRIF has the great pleasure to welcome a new research scientist (CNRS): Claire Mathieu, an expert in algorithms, particularly the design of approximation schemes for NP-hard combinatorial.

12.10.2018
IRIF has the great pleasure to welcome a new professor (Paris Diderot): Pierluigi Crescenzi, an expert in graph algorithms, particularly in the analysis of real-world complex networks.

12.10.2018
IRIF has the great pleasure to welcome a new assistant professor (Paris Diderot): Adrien Guatto, an expert in synchronous languages, typed functional programming, and categorical semantics.

10.10.2018
IRIF has the great pleasure to welcome a new assistant professor (Paris Diderot): Daniela Petrisan, an expert in categories, co-algebra and automata.

9.10.2018
The paper “Equivalences for Free : Univalent Parametricity for Effective Transport” of Matthieu Sozeau (IRIF), with his coauthors Nicolas Tabareau and Eric Tanter, has been selected as a distinguished paper of the ICFP conference.

8.10.2018
Jean Krivine (researcher at IRIF) will lead a public debate about Artificial Intelligence at the “Festival Maths en Ville” of Saint-Denis. It will take place on the 11/10/2018 at the theater “L'écran”, starting at 19.30.

8.10.2018
On October 8-11 IRIF organizes a joint meeting of 3 projects which are closely related: GDRI-LL, CRECOGI, and ELICA. Everybody is welcome to attend.

7.10.2018
IRIF is having its back-to-work-day on October 15th. In the morning, there will be a PhD student session, and in the afternoon a series of talks given by new faculty and CNRS members.

7.10.2018
Jean-Eric Pin, CNRS senior researcher at IRIF, is awarded the Arto Salomaa prize for his outstanding contribution to the field of Automata Theory.

5.10.2018
IRIF is seeking excellent candidates for about 10 postdoctoral positions in all areas of the Foundations of Computer Science.

4.10.2018
In an article of October of Communications of the ACM, Jean-François Abramatic, Roberto Di Cosmo (IRIF) and Stefano Zacchiroli (IRIF) explain the mission of the Software Heritage project.

15.9.2018
IRIF co-organizes the Workshop on Emergent Algorithms and Network Dynamics (Wendy) that will take place at Institut Henri-Poincaré in Paris on October 10-11, 2018. Registration is free but mandatory.

14.9.2018
The October 2, IRIF organizes the next Annual workshop of the French Working Group on Complexity and Algorithms (CoA). This year, the workshop will consist of a series of introductory and survey talks about various hot topics in algorithms, including Blockchains, Machine Learning, Sum-of-Square, etc.

11.9.2018
Back-to-work day of the "Algorithms and discrete structures" pole, which gathers the research groups Algorithms and complexity, Combinatorics, Complex Systems, Networks, and Distributed Computing and Theory and algorithmics of graphs on September 11, 2018, room 3059, 9h30-16h15.

7.9.2018
The EU QuantAlgo project workshop will be held in Paris at IRIF September 25-28, 2018. This is a joint workshop with the IRIF-IQC Cooperation project between CNRS and U. Waterloo. QuantAlgo project aims to combine research on the fundamentals of quantum algorithms with the development of new applications.

4.9.2018
IRIF organizes the workshop Quantifiers and duality that will take place at Amphi Turing (building Sophie Germain, University Paris Diderot) on the 2018/09/11. Registration is free but mandatory.

9.8.2018
IRIF organizes the 7th FILOFOCS (French-Israeli Laboratory on Foundations of Computer Science) workshop which will be held at the institut Henri Poincaré (IHP), on 3-5 October, 2018. A preliminary list of speakers in now available and registration (mandatory, but free) is now open.

1.8.2018
At the occasion of the retirement of Michel Habib and in celebration of his achievements, IRIF organizes a two-day conference “40 années d'algorithmique de graphes”, 11-12 Oct, Amphi Turing (Sophie Germain, Univ. Paris Diderot). Free mandatory registration.

29.7.2018
Ludovic Patey was awarded the Prix Thiessé de Rosemont / Demassieux for his PhD thesis « Les mathématiques à rebours de théorèmes de type Ramsey », supervised by Laurent Bienvenu and Hugo Herbelin.

29.7.2018
IRIF organizes the 59th IEEE Symposium on Foundations of Computer Science (FOCS 2018) on October 7-9, 2018. FOCS is a leading annual conference in Theoretical Computer Science, and has served in the last 60 years as a venue for announcing the major scientific advances in the field. The list of accepted papers is now available, and the registration is now open (deadline for early rate: September 9, 2018).

10.7.2018
Mihaela Sighireanu (IRIF) is organizing the second edition of SL-COMP, a competition of solvers for separation logic. The final results will be presented at ADSL 2018, a workshop of FLOC2018, which will take place in Oxford on the 13.07.18.
separation logic

6.7.2018
Mihaela Sighireanu (IRIF) is co-chair of the 18th International Workshop on Automated Verification of Critical Systems (AVOCS) which will take place in Oxford from 18.07.18 to 19.07.18 as part of FLOC2018.

29.6.2018
Raphaëlle Crubillé (PhD student IRIF) will present at LICS 2018 an analytic account of the discrete probabilities fragment of a denotational model for higher-order programming with general probabilities, hopefully a first step towards proving that this model is fully abstract.
fully abstract

27.6.2018
Berenice Delcroix-Oger (IRIF) participated to the annual festival Salon Culture & Jeux Mathématiques 2018. On the following video (1:50), she presents a funny game where mathematics help you perform magic tricks!

15.6.2018
Amina Doumane (former PhD student at IRIF, now at LIP) was awarded the Ackermann prize of EACSL for her PhD thesis entitled On the infinitary proof theory of logics with fixed points.

6.6.2018
Today Roberto Di Cosmo (professor at IRIF) with a ceremony at UNESCO opened to the public the archives of Softwareheritage.org, a worldwide initiative to create a universal library of computer programme source codes since the dawn of the digital age.

6.6.2018
We are delighted to host as part of our IRIF Distinguished Talks Series Christos Papadimitriou (Columbia University) on July 13, 10:30 for a talk entitled “A computer scientist thinks about the Brain”.

6.6.2018
Delia Kesner (IRIF) and Matthieu Sozeau (IRIF) will both give invited talks entitled “Multi Types for Higher-Order languages” and “The Predicative, Polymorphic Calculus of Cumulative Inductive Constructions and its implementation” at TYPES 2018, held in Braga (Portugal), June 18-21.

1.6.2018
Adi Rosén (IRIF) will give a talk during a 1-day colloquium at Collège de France as part of the annual Chair of Claire Mathieu (IRIF associate member) on Algorithms, June 7.

1.6.2018
Claire Mathieu (IRIF associate member) organizes a 1-day colloquium on Approximation algorithms and networks at Collège de France on June 7. This is part of the Chair in Informatics and Computational Sciences at College de France in association with INRIA.
approximation algorithm

31.5.2018
Paul-André Melliès (IRIF) will present at LICS 2018 his work on ribbon tensorial logic, a primary logic designed to reveal the secret topology of reasoning. This is the first time that logical proofs are faithfully translated into topological tangles using functorial knot theory.
knot theory

30.5.2018
« Tous femmes de numérique ! » Après leur rencontre avec 4 informaticiennes de l’IRIF, 14 lycéennes du Lycée Jules Ferry ont expliqué à leurs camarades l’exposition permanente du Palais de la découverte sur l’informatique et les sciences du numérique le 29/05.

25.5.2018
Marie Kerjean (PhD student IRIF) will present at LICS 2018 a logical account for linear partial differential equations. With this work, she unveils a bridge between mathematical physics and proof theory, paving the way for exciting and mutually beneficial transfers of techniques.
sequent

21.5.2018
Pierre Vial (IRIF) will present at LiCS 2018 an excerpt of his PhD work at IRIF proving that every lambda-term has an infinite linear representation in the infinitary relational model. This work pioneers a technique that allows giving a semantic even to unproductive programs.
unproductive

11.5.2018
Amos Korman (IRIF) Amos Korman is co-chairing, and organizing the 6th Workshop on Biological Distributed Algorithms, to be held in London in July, the 23rd.
biological algorithm

4.5.2018
Miklos Santha (IRIF) participates to the conference-debate Calcul, communication, simulation et métrologie quantiques : des principes aux réalisations concrètes organized by Académie des sciences at the Institut de France on May 15.

27.4.2018
IRIF is proud to announce that Delia Kesner, professor of University Paris Diderot and researcher at IRIF, was appointed senior member of IUF.

23.4.2018
Six papers coauthored by IRIF members will be presented at the prestigious conference LICS'18 in Oxford this summer. Topics range from λ-calculus, to Separation Logic…

6.4.2018
Victor Lanvin (PhD student of Giuseppe Castagna, IRIF) is awarded the Google PhD fellowship! Through the FSMP, Google will give a significant support to Victor's research work on gradual typing.
gradual typing

3.4.2018
The conference Numeration 2018 will be held on May 22-25 at the University Paris Diderot, and is organized by Valérie Berthé, Christiane Frougny and Wolfgang Steiner from IRIF.

21.3.2018
“The Kappa platform for rule-based modeling”, a collaboration between Jean Krivine (IRIF) and researchers from Harvard University, ENS and Santa Cruz University will be presented at ISMB2018.

21.3.2018
The next meeting of the ANR project DELTA, conducting research about the new challenges in Logic, Automata and Transducers, will take place at University Paris Diderot from 2018/03/26 to 2018/03/28. Scientific talks are public.
automaton

21.3.2018
The next meeting of the ANR project DESCARTES, aiming at defining a modular approach for distributed computing, will take place at IRIF on March 28, 2018. Scientific talks are public.

8.3.2018
In the scope of the IRIF Distinguished Talks Series Monika Henzinger (University of Vienna) will give on April 13 a talk on “The state of the art in dynamic graph algorithms”.
algorithm

2.3.2018
Adrian Kosowski (IRIF), together with Bartek Dudek (University of Wroclaw), will present at STOC 2018 a new protocol for spreading information in a population. This is the first time that methods of oscillatory dynamics are used to solve a basic task of information dissemination.
information dissemination

27.2.2018
Constantin Enea (IRIF) is an organizer of the 2018 edition of the EPIT research school, on the subject of software verification, to he held in Aussois on May 7-11 2018.

27.2.2018
FSMP offers 20 PhD student positions in Maths and TCS under H2020 COFUND project MathInParis. As a member of the FSMP network, IRIF is an eligible hosting lab. Call for application is open until April, 1st 2018. Applicants must be international students, but master students already in France for less than a year are eligible.

7.2.2018
Peter Habermehl (IRIF) and Benedikt Bollig (LSV, ENS Paris-Saclay) organize the research school MOVEP (Modelling and Verification of Parallel Processes), on July 16-20 in Cachan.

5.2.2018
Université Paris Diderot has opened three permanent positions in Computer Science (1 professor on Graph and applications, 1 assistant professor on Software Science, 1 assistant professor on Data Science). Recruited researchers will join IRIF.

4.2.2018
Laurent Viennot (IRIF, Inria) is Scientific Curator of the exhibition Informatique et sciences du numérique, at Palais de la découverte, starting March 13, 2018.

2.2.2018
Amina Doumane, now at LIP, was awarded the “La Recherche” prize in the Computer Science category for her paper entitled Constructive Completeness for the linear-time mu-calculus, a work accomplished during her PhD at IRIF and that appeared in the proceedings of LICS’17.

1.2.2018
The first on-the-fly quantum money transaction was implemented by researchers in Paris, including Iordanis Kerenidis. ​Quantum ​money is provably unforgeable​ due to the no-cloning property of quantum information.​
quantum information

27.1.2018
The international French and Argentina CNRS laboratory called INFINIS lead by Delia Kesner (IRIF) and Sergio Yovine (CONICET) is presented in the CNRS Rio newsletter.

18.1.2018
IRIF organizes on February, 6th a Scientific Day in memory of Maurice Nivat, professor at Paris Diderot University and a pionneer of theoretical computer science. Please register.

11.1.2018
January the 10th 2018, this is the kick-off meeting of the ANR project FREDDA (FoRmal mEthods for the Design of Distributed Algorithms).

5.1.2018
Lucas Boczkowski and Amos Korman from IRIF, with their co-authors, will present at ITCS 2018 a non-conditional lower bound on information dissemination in stochastic populations. The paper is the first ever to combine an algorithmic lower bound with a biology experiment in collective behavior.

19.12.2017
IRIF and ATOS have started the first Industrial PhD Thesis (CIFRE) on quantum algorithms in France. The PhD candidate Alessandro Luongo is co-advised by Iordanis Kerenidis and Frédéric Magniez.

29.11.2017
Amina Doumane was awarded the Gilles Kahn prize for her PhD thesis entitled « On the infinitary proof theory of logics with fixed points » supervised by Alexis Saurin, David Baelde and Pierre-Louis Curien.

29.11.2017
Wenjie Fang was awarded the Honorable Mention of the Gilles Kahn prize for his PhD thesis entitled « Aspects énumératifs et bijectifs des cartes combinatoires : généralisation, unification et application » and supervised by Guillaume Chapuy and Mireille Bousquet-Mélou.

27.11.2017
Scientific Day in memory of Maurice Nivat, professor at Paris Diderot University and a pionneer of theoretical computer science in France and in the world, who passed away on September the 21st, 2017.

25.11.2017
Back-to-work day of the “Automata, Structures, and Verification” pole, which gathers the research groups Automata and applications and Modelling and verification on November 25, 2017.

22.11.2017
6th French-Israeli Workshop on Foundations of Computer Science on November 22-23, 2017 at Tel-Aviv University, Israel.

15.11.2017
2-day workshop on December 7-8: Closing workshop of ANR project on Restricted Data Access Models and 1st IRIF-IQC Workshop on Quantum Information Processing (CNRS bilateral collaboration).

6.11.2017
IRIF newcomers Day on November 6, 2017 at Amphi Turing

1.11.2017
Pierre Fraigniaud (IRIF) will give a seminar at Collège de France as part of the annual Chair of Claire Mathieu (IRIF associate member) on Algorithms, November 18.

10.10.2017
Back-to-work day of the “Proofs, programs and systems” pole on October 12-13, 2017 at room 3052.

6.10.2017
Guillaume Lagarde and Sylvain Perifel have solved a 20-year old conjecture related to Lempel-Ziv. This will be presented at the 29th ACM-SIAM Symposium on Discrete Algorithm (SODA 2018).

1.10.2017
Two papers coauthored by IRIF members will be presented at SODA’18, the main conference in algorithm design. Topics include the resolution of a 20-year old conjecture related to Lempel-Ziv, and a new approximation algorithm for recognizing Dyck languages.

1.9.2017
IRIF has the great pleasure to welcome a new assistant professor: Bérénice Delcroix-Oger, an expert in combinatorics and computational algebra.

1.9.2017
Claire Mathieu (IRIF associate member) holds the Chair in Informatics and Computational Sciences at College de France in association with Inria for the academic year 2017-18.

10.7.2017
Closing workshop of ANR project MealyM on July 10-13, 2017 at Amphi Turing.

15.6.2017
Victor Lanvin is awarded the first prize for the ACM Student Research Competition Grand Finals, undergraduate category. The prize will be presented on June the 24th at the Turing Award Cerimony in San Francisco.

1.3.2017
The 5-year ERC project CombiTop of Guillaume Chapuy has started on March 1st, 2017. The purpose of this project is to use the ubiquitous nature of certain combinatorial topological objects called maps in order to unveil deep connections between several areas of mathematics.

30.1.2017
Amos Korman has been interviewed by Le Monde for his recent results on ants with several co-autors at IRIF.

2.1.2017
IRIF organizes the 44th ACM Symposium on Principles of Programming Languages (POPL 2017), Jussieu, Paris, January 15-21, 2017.