Recorded talks

2023

De l’esthétique de la géométrie (in French)

Révéler le caractère esthétique des mathématiques grâce à des images, des vidéos, des objets d’art… Voilà notamment ce qui anime Rémi …

2022

Growth and co-growth in negatively curved groups: a dynamical point of view

This mini-course is an introduction to growth problems in negatively curved groups with an emphasis on techniques borrowed from …

2021

Twisted Patterson-Sullivan Measure and Applications to Growth Problems

Given a group G acting properly by isometries on a metric space X, the exponential growth rate of G with respect to X measures …

2017

Monster groups acting on CAT(0) spaces

Since the beginning of the 20th century, infinite torsion groups have been the source of numerous developments in group theory: …

2016

Monster groups acting on CAT(0) spaces

Since the beginning of the 20th century, infinite torsion groups have been the source of numerous developments in group theory: …

2014

Théorie de la petite simplification : une approche géométrique

Une “bonne” action de groupe sur un espace hyperbolique (au sens de Gromov) permet de capturer les propriétés à large …