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Title:
Box spaces, expanders, and rigidity

Speaker:
Anastasia Khukhro

Abstract:
We will present a new construction of a box space of a free group which does not contain coarsely embedded expanders, but does not embed coarsely into Hilbert space. We will also describe a new rigidity result for box spaces of finitely presented groups, and give some applications. This is joint work with Thiebout Delabie

Link:
https://www.msri.org/workshops/770/schedules/21625

Workshop:
MSRI- Amenability, coarse embeddability and fixed point properties