A nice trick involving amenable groups
Presenter
December 9, 2016
Keywords:
- amenable groups
- grigorchuk group
- spectral radius
- a-T-menability
- fixed point properties
- hyperbolic group
- Banach space
- group cohomology
- expander graph
- index theory
- non-commutative geometry
MSC:
- 20F69
- 43A07
- 20-xx
- 43-xx
- 46-xx
- 57-xx
- 58-xx
- 46L80
- 20F65
- 19-xx
- 20J06
Abstract
I will discuss a recent construction (joint with I. Pak) of a family of finitely generated groups whose spectral radii form a Cantor set.