Expositiones MathematicaeVolume 25, Issue 2, 1 May 2007, Pages 117-130A Følner invariant for type II1 factorsAuthor links open overlay panelJon P. Bannon a, Mohan Ravichandran bShow moreShareCitehttps://doi.org/10.1016/j.exmath.2006.08.002Get rights and contentUnder an Elsevier user licenseopen archiveAbstractIn this article, we introduce an isomorphism invariant for type II1 factors using the Connes–Følner condition. We compute bounds of this number for free group factors.Previous article in issueNext article in issueMSC46L3546L10KeywordsFunctional analysisOperator algebrasType II1 factorsRecommended articlesCited by (0)Copyright © 2006 Elsevier GmbH. All rights reserved.