Cyril Houdayer

Professor of Mathematics

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Groups and Operator Algebras seminar (2021-2022)

Organizers: Camille Horbez and Cyril Houdayer

Mondays, 2PM-3PM, building 307, Université Paris-Saclay, Orsay

Talks

Monday September 13

Jean Lécureux (Université Paris-Saclay)

Proper proximality in non-positive curvature

Monday September 27

Merlin Incerti-Medici (IHES)

Detecting deformations of hyperbolic manifolds and normal growth

Monday October 4

Bruno Duchesne (Université Paris-Saclay)

Dynamical proof of the existence of the Haar measure

Monday October 18

Léonard Cadilhac (Sorbonne Université)

Noncommutative ergodic theorems and Folner tilings

Monday October 25

Piotr Przytycki (McGill University)

Tits alternative for 2-dimensional CAT(0) complexes

Monday November 8

Matthieu Joseph (ENS de Lyon)

Allosteric actions of surface groups

Monday November 22

Antonio Lopez-Neumann (Ecole polytechnique)

Finitely presented simple groups and measure equivalence

Monday November 29

Amandine Escalier (WWU Münster)

Constructing prescribed orbit equivalences

Monday December 6

Sami Douba (McGill University)

Thin right-angled Coxeter subgroups of some uniform arithmetic lattices

Monday January 24

Basile Morando (ENS Paris)

A type I conjecture and boundary representations of hyperbolic groups (after Caprace-Kalantar-Monod)

Monday January 31

Maria Paula Gomez Aparicio (Université Paris-Saclay)

Baum-Connes conjecture and pure braid groups

Monday February 7

Amaury Freslon (Université Paris-Saclay)

How to (not) shuffle cards

Monday February 21

Marcin Sabok (McGill University)

Perfect matchings in hyperfinite graphings

Monday March 7

Corentin Le Bars (Université Paris-Saclay)

Random walks and rank one isometries in CAT(0) spaces

Monday March 21

Indira Chatterji (Université Côte d’Azur)

Delta-median spaces

Monday March 28

Yassine Guerch (Université Paris-Saclay)

Relative currents and growth in Out(F_N)

Monday April 4

François Dahmani (Université Grenoble Alpes)

Around the conjugacy problem between outer automorphisms of free groups

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