A \(C^*\)-algebra \(\mathcal A\) for which Ext (\(\mathcal A\)) is not a group

DOI10.2307/1971124zbMath0378.46057OpenAlexW2313548458MaRDI QIDQ5966960

Joel Anderson

Publication date: 1978

Published in: Annals of Mathematics. Second Series (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2307/1971124

Mathematics Subject Classification ID

General theory of (C^*)-algebras (46L05) Ext and Tor, generalizations, Künneth formula (category-theoretic aspects) (18G15)

Related Items (9)

Algebraic \(K\)-theory of stable \(C^*\)-algebras ⋮ Translation invariant asymptotic homomorphisms and extensions of \(C^*\)-algebras ⋮ Fubini products of \(C^*\)-algebras ⋮ All extensions of \(C^*_r(\mathbb F_n)\) are semi-invertible ⋮ Convex sets associated to \(C^{\ast}\)-algebras ⋮ Lifting problems and local reflexivity for \(C^ *\)-algebras ⋮ Some C^*-algebras whose Ext is not a group ⋮ \(K\)-theory and ext-theory for rectangular unitary \(C^*\)-algebras ⋮ Around quasidiagonal operators

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