The chair Biography and publications Public lectures Guest lecturers Annual summaries Audios and videos News Upcoming Previous Program Equivalencies (1) Xavier Leroy Lecture 5 Nov 2026 09:30 to 11:00 Concurrency Theory: From Its Origins Toward a Science of Processes Davide Sangiorgi Seminar 5 Nov 2026 11:15 to 12:15 Denotational Approaches and Full Abstraction Xavier Leroy Lecture 12 Nov 2026 09:30 to 11:00 Interaction Equivalence Adrienne Lancelot Seminar 12 Nov 2026 11:15 to 12:15 Bisimulations 1 Xavier Leroy Lecture 19 Nov 2026 09:30 to 11:00 Semantics of Programming Language Games Pierre Clairambault Seminar 19 Nov 2026 11:15 to 12:15 Bisimulations 2 Xavier Leroy Lecture 26 Nov 2026 09:30 to 11:00 Fixed-Point Theorems and Coinduction Without Coinduction Damien Pous Seminar 26 Nov 2026 11:15 to 12:15 Program Equivalencies (5) Xavier Leroy Lecture 3 Dec 2026 09:30 to 11:00 Probabilistic Relational Logic and Its Applications to Cryptography Benjamin Grégoire Seminar 3 Dec 2026 11:15 to 12:15 Program Equivalencies (6) Xavier Leroy Lecture 10 Dec 2026 09:30 to 11:00 The Semantics of Dynamic Allocation: From Fresh Names to Bundles Guilhème Jaber Seminar 10 Dec 2026 11:15 to 12:15 Relational Program Logic Xavier Leroy Lecture 17 Dec 2026 09:30 to 11:00 Program Equivalencies (7) Xavier Leroy Seminar 17 Dec 2026 11:15 to 12:15 Next 5 series Filters Event type Event type Lecture (2) Seminar (2) Symposium (1) Academic year Academic year (-) 2026 - 2027 (2) 2025 - 2026 (2) 2024 - 2025 (1) (-) 2023 - 2024 (3) 2022 - 2023 (2) 2021 - 2022 (3) 2020 - 2021 (2) 2019 - 2020 (2) 2018 - 2019 (3) Active filters 2026 - 2027 2023 - 2024 2026 - 2027 Program Equivalencies Xavier Leroy 05 Nov 2026 → 17 Dec 2026 Lecture 05 Nov 2026 → 17 Dec 2026 Program Equivalencies Xavier Leroy 05 Nov 2026 → 17 Dec 2026 Seminar 05 Nov 2026 → 17 Dec 2026 2023 - 2024 AI and its challenges Philippe Aghion, Xavier Leroy, Benoît Sagot 28 Sep 2023 Symposium 28 Sep 2023 Control structures : from goto to algebraic effects Xavier Leroy 25 Jan 2024 → 14 Mar 2024 Lecture 25 Jan 2024 → 14 Mar 2024 Control structures : from goto to algebraic effects Xavier Leroy 08 Feb 2024 → 14 Mar 2024 Seminar 08 Feb 2024 → 14 Mar 2024