3 papers
math.OA2011
Residually finite actions and crossed products
David Kerr, Piotr W. Nowak
We study a notion of residual finiteness for continuous actions of discrete groups on compact Hausdorff spaces and how it relates to the existence of norm microstates for the reduc…
math.MG2004
Coarse embeddings of metric spaces into Banach spaces
Piotr W. Nowak
There are several characterizations of coarse embeddability of a discrete metric space into a Hilbert space. In this note we give such characterizations for general metric spaces.…
math.MG2004
Group actions on Banach spaces and a geometric characterization of a-T-menability
Piotr W. Nowak
We prove a geometric characterization of a-T-menability through proper, affine, isometric actions on the Banach spaces for . This answers a question of A. Valette…