On the Lack of Inverses to C*-Extensions Related to Property T Groups

DOI10.4153/CMB-2007-027-1zbMath1132.19002arXivmath/0501412OpenAlexW2054832519MaRDI QIDQ5436646

Klaus Thomsen, Vladimir M. Manuilov

Publication date: 17 January 2008

Published in: Canadian Mathematical Bulletin (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/math/0501412

zbMATH Keywords

homotopyproperty T group\(C^*\)-algebra extensionasymptotic tensor \(C^*\)-norm

Mathematics Subject Classification ID

(K)-theory and operator algebras (including cyclic theory) (46L80) General theory of (C^*)-algebras (46L05) Ext and (K)-homology (19K33) Special aspects of infinite or finite groups (20F99)

Related Items (5)

Semi-invertible extensions of \(C^{*}\)-algebras ⋮ All extensions of \(C^*_r(\mathbb F_n)\) are semi-invertible ⋮ Extensions of the reduced group \(C^{*}\)-algebra of a free product of amenable groups ⋮ One more pathology of \(C^{*}\)-algebraic tensor products ⋮ Non-K-exact uniform Roe C*-algebras

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