Jacques Tits Chair 2025

The 2025 Jacques Tits chair has been awarded by the BMS to François Loeser (IMJ-PRG Paris). He will visit Belgium during the month of March and at the beginning of April. He will deliver a series of lectures that may be attended independently of one another. Each talk will kick off with an introductory part about the topic of the day. The theme will revolve around non-Archimedean methods and valued fields.

Programme

Inaugural Lecture (mandatory registration) on March 5, 2026

15:45 Welcome Introduction
16:00 From p-adic integration to motivic integration and beyond: the importance of being definable
17:15 Reception

Location: University Foundation, rue d’Egmont 11, 1050 Brussels

KU Leuven Lectures

March 4, 14:30–17:00: Stable completions of curves over valued fields and applications
March 11, 14:30–17:00: Tropical functions on skeleta
March 18, 14:30–17:00: Motivic aspects of the Fundamental Lemma
March 25, 14:30–17:00: Integrating on quotients and application

Location: Department of Mathematics, Room B02.18, Celestijnenlaan 200, 3001 Leuven

UMONS Lectures

March 12, 15:45–18:15: On the unexpected ubiquity of non-archimedean methods in mathematics (a reception will take place at 17:15, mandatory registration).
March 19, 15:45–18:15: Ax-Kochen-Ershov Theorems, old and new
March 20, 15:45–18:15: Non-archimedean integrals as limits of complex integrals
March 31 15:45–18:15: Arcs and Monodromy
April 1, 15:45–18:15: Tame geometry over valued fields

Location: Building BSM, Campus de la Plaine de Nimy, Avenue Maistriau, 7000 Mons

Registration

Registration is mandatory for the inaugural lecture the inaugural lecture and for the first lecture in Mons. Please use the following link

More information: raf.cluckers@kuleuven.be, christian.michaux@umons.ac.be, wim.veys@kuleuven.be