On co-amenability for groups and von Neumann algebras
Group Theory
2007-05-23 v3 Operator Algebras
Abstract
We first show that co-amenability does not pass to subgroups, answering a question asked by Eymard in 1972. We then address co-amenability for von Neumann algebras, describing notably how it relates to the former.
Cite
@article{arxiv.math/0301348,
title = {On co-amenability for groups and von Neumann algebras},
author = {Nicolas Monod and Sorin Popa},
journal= {arXiv preprint arXiv:math/0301348},
year = {2007}
}
Comments
final version (minor changes)