Working group meeting, April 26-28, 2023 Organisation: ANR Project DUCAT Location: April 26-27: Campus de Luminy, Centre International de Rencontres Mathématiques (CIRM), room A2. April 28: Campus Saint-Charles: Fédération de Recherche des Unités de Mathématiques de Marseille (FRUMAM), salle séminaire 3ème étage. Scientific Program: Wednesday April 26 14:00-15:00 Sergio Rajsbaum (UNAM): No extension-based proofs for Set-Agreement 15:30-16:30 Jérémie Chalopin (LIS): Mazurkiewicz's Algorithm 17:00-18:00 Pierre Fraigniaud (IRIF): Synchronous t-resilient Consensus in Arbitrary Graphs Thursday April 27 09:30-10:30 Emmanuel Godard (LIS): Message adversary for oblivious k-set agreement 11:00-12:00 Ami Paz (LISN): Topological Characterization of Consensus Solvability in Directed Dynamic Networks 12:00-14:00: Lunch 14:00-15:00 Petr Kuznetsov (Telecom Paris): Affine Tasks 15:30-16:30 Sergio Rajsbaum (UNAM): Interval Linearizability 17:00-18:00 Carole Delporte (IRIF): On t-resilient immediate snapshots vs. k-set agreement Friday April 28 09:30-10:30 Emmanuel Godard : Emmanuel Godard and Yannis Coutouly (LIS): Continuity and Separability Matters in Distributed Computing 11:00-12:00 Open problem session 12:00 End of Meeting