Nir Lazarovich - As hyperbolic as they Comm

mardi 8 sept. 2026, 14:00 → 15:00 Europe/Paris

435 (UMPA)

An abstract commensurator of a group is an isomorphism between two of its finite index subgroups. In this talk I will survey some results and conjectures about commensurators of Gromov hyperbolic groups.

Based on joint works with Alex Margolis, Suraj Krishna Meda Satish, Mahan Mj., Gon Rahamim and Alessandro Sisto.