{ "id": "math/0211284", "version": "v6", "published": "2002-11-18T23:27:16.000Z", "updated": "2004-04-28T17:40:39.000Z", "title": "Amenability and weak amenability of the Fourier algebra", "authors": [ "Brian E. Forrest", "Volker Runde" ], "comment": "16 pages; some, hopefully clarifying revisions", "journal": "Math. Z. 250 (2005), 731-744", "categories": [ "math.FA", "math.OA" ], "abstract": "Let $G$ be a locally compact group. We show that its Fourier algebra $A(G)$ is amenable if and only if $G$ has an abelian subgroup of finite index, and that its Fourier-Stieltjes algebra $B(G)$ is amenable if and only if $G$ has a compact, abelian subgroup of finite index. We then show that $A(G)$ is weakly amenable if the component of the identity of $G$ is abelian, and we prove some partial results towards the converse.", "revisions": [ { "version": "v6", "updated": "2004-04-28T17:40:39.000Z" } ], "analyses": { "subjects": [ "22D25", "22E99", "43A30", "46H20", "46H25", "47L50" ], "keywords": [ "fourier algebra", "weak amenability", "abelian subgroup", "finite index", "partial results" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 16, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2002math.....11284F" } } }