Colloquium Professor Sebastian HENSEL

A colloquium will take place on Friday, September 29, 2023, in Université Paris-Est Créteil UPEC LAMA

11:00-11:30 Welcome coffee : Room P3 413

11:30-12:30 : Seminar talk by Sebastian HENSEL (Mathematisches Institut der LMU München), Federica FANONI (LAMA UPEC) Room P1 025

Title : Fine Curve Graphs and Surface Homeomorphisms

Abstract: In this talk, we will give an overview of a recent program that aims to study homeomorphism groups of surfaces using coarse geometric methods. More precisely, we will talk about the fine curve graph, which is a hyperbolic graph on which the homeomorphism group of a surface acts in an intersecting way. No familiarity with curve graphs, fine or not, will be assumed. Most of the results are joint work with Jonathan Bowden and Richard Webb.