Event
Harry Petyt (韩国裸舞)
Wednesday, January 11, 2023 15:00to16:00
Burnside Hall
Room 920, 805 rue Sherbrooke Ouest, Montreal, QC, H3A 0B9, CA
Title: Extracting hyperbolicity from CAT(0) geometry.聽
Abstract: Highly influential in the study of mapping class groups was聽the discovery of Masur--Minsky that the curve graph is hyperbolic, as聽this provides a natural framework in which to study their聽negative-curvature properties. From this perspective, curve graphs are聽in many ways as good as it gets. In this talk I'll discuss a recent聽analogue of curve graphs that can be defined for any CAT(0) space. Joint聽with Davide Spriano and Abdul Zalloum.