Exactness from Proper Actions

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dc.creatorBrodzki, Jacek
dc.creatorNiblo, Graham A.
dc.creatorWright, Nick
dc.date2005-07-07
dc.date.accessioned2026-07-07T05:21:30Z
dc.date.available2026-07-07T05:21:30Z
dc.descriptionIn this paper we show that if a discrete group $G$ acts properly isometrically on a discrete space $X$ for which the uniform Roe algebra $C_u^*(X)$ is exact then $G$ is an exact group. As a corollary, we note that if the action is cocompact then the following are equivalent: The space $X$ has Yu's property A; $C^*_u(X)$ is exact; $C_u^*(X)$ is nuclear.
dc.description5 pages
dc.identifierhttps://arxiv.org/abs/math/0507146
dc.identifierhttp://arxiv.org/abs/math/0507146
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/75711
dc.subjectOperator Algebras
dc.subjectFunctional Analysis
dc.subjectGroup Theory
dc.subject58B34; 20F69, 46L89
dc.titleExactness from Proper Actions
dc.typetext

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