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*