Group Theory seminar (2024-2025)

Organizers: Laurent Bartholdi, Anna Erschler and Cyril Houdayer

Funded by ERC Advanced Grant NET

One afternoon per month, 14:00-17:00, DMA, room W, École normale supérieure

14:00-14:45 Thomas Delzant (Université de Strasbourg)

Group rings and hyperbolic geometry

15:00-15:45 Tom Hutchcroft (Caltech)

Small-ball estimates for random walks on groups

16:15-17:00 Kasia Jankiewicz (UC Santa Cruz & IAS Princeton)

Cubical quotients of nonproducts

14:00-14:45 Mikael de la Salle (CNRS & Université de Lyon)

Strong convergence of unitary representations

15:00-15:45 Sandip Singh (IIT Bombay & Institut des Hautes Études Scientifiques)

Hypergeometric groups and their arithmeticity

16:15-17:00 Nicolas Tholozan (CNRS & École normale supérieure)

Pseudo-Riemannian lattices

14:00-14:45 Soham Chakraborty (École normale supérieure)

Measured groupoids and the Choquet-Deny property

15:00-15:45 Fanny Kassel (CNRS & Institut des Hautes Études Scientifiques)

Combination theorems in convex projective geometry

16:15-17:00 Anush Tserunyan (McGill University & Université Paris-Cité)

Measure equivalence of Baumslag–Solitar groups

14:00-14:45 Thomas Vidick (École Polytechnique Fédérale de Lausanne)

The Aldous-Lyons conjecture and undecidability

15:00-15:45 Oren Becker (University of Cambridge)

Stability and testability

16:15-17:00 Guillaume Aubrun (Université de Lyon)

Complexity of high-dimensional polytopes and quantum entanglement

14:00-14:45 Bram Petri (Sorbonne Université)

Bass notes of closed arithmetic hyperbolic surfaces

15:00-15:45 Federica Gavazzi (Université de Bourgogne)

Virtual Artin groups

16:15-17:00 Amandine Escalier (Université de Lyon)

Measure equivalence and orbit equivalence of graph products