Place: Fields Institute (Room 210)

Date: March 3rd, 2017 (13:30-15:00)

Speaker: Marcin Sabok

Title: Hyperfiniteness of boundary actions of cubulated hyperbolic groups

Abstract: An old result of Dougherty, Jackson and Kechris implies that the

boundary action of the free group F2 induces a hyperfinite equivalence

relation. During the talk, I will discuss generalizations of this theorem

to the class of hyperbolic groups. The examples discussed will include

groups acting properly and cocompactly on CAT(0) cube complexes. This is

joint work with Jingyin Huang and Forte Shinko.