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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.

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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.

SOCS2020

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.

Pierre-Louis Curien

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
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.

Delia Kesner

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

Geoffroy Couteau

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.

Claire Mathieu

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.

Nicolas Behr

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

Miklós Santha

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.

Geoffroy Couteau

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.

Liat Peterfreund

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.

IRIF

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.

Adrian Vladu

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.

Preuves, Programmes et Systèmes

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.

PARIS REGION

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.

Mikael Rabie

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.

Thomas Vidick

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.

Baptiste Louf

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.

Numeration - OWNS

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.

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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.

Iordanis Kerenidis

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.

David Peleg

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.

Thomas Vidick

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.

Enka Blanchard

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.

Tommaso Petrucciani

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

A function is polymorphic when it can be applied to arguments of different types. For instance, the identity function fun x = x is polymorphic since it can be applied, say, to integers and Boolean arguments, while the successor function fun x = x+1 is not, since it can be applied only to integers. The latter function has type Int→Int, while the former has type ∀α.α→α, that is, it has type α→α for all possibles types α. The last type is a polymorphic type. Set theoretic types are types with union, intersection, and negation connectives: again fun x = x has both type Int→Int and Bool→Bool and, thus, it has the intersection type (Int→Int)∩(Bool→Bool).
Amos Korman

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.

Sylvain Schmitz

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.

FSCD

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.

Sciences POP

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.

Amos Korman

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.

Theoretical Computer Scientists for Future

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
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.

Simon Mauras

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”

Numeration - OWNS

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.

Raphaëlle Crubillé

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.

Claire Mathieu

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
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.

Frédéric Magniez

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.

Pierre Fraigniaud

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.

LICS

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.

EATCS

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.

John Horton Conway

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.
John Conway's Game of Life

IRIF

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.

IRIF

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.

OCaml-Software-Foundation

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!

IRIF Distinguished Talks

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”.

PLDI 2020

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.

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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).

JFLA 2020

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.

Emilio J. Gallego Arias

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.

Report about Quantum Technologies

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.

Matthieu Josuat-Vergès

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.

Université de Paris

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).

SODA20

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.

SODA20

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.

IRIF Distinguished Talks Series

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”.