Positive definite maps on amenable groups, II
Group Theory
2022-10-21 v1 Operator Algebras
Abstract
We introduce an Ulam-type stability condition for positive definite maps defined on a countable group and prove that this condition characterizes amenability.
Cite
@article{arxiv.2210.10823,
title = {Positive definite maps on amenable groups, II},
author = {Mikaël Pichot and Erik Séguin},
journal= {arXiv preprint arXiv:2210.10823},
year = {2022}
}