C*-irreducibility for reduced twisted group C*-algebras

Abstract

We study C*-irreducibility of inclusions of reduced twisted group C*-algebras and of reduced group C*-algebras. We characterize C*-irreducibility in the case of an inclusion arising from a normal subgroup, and exhibit many new examples of C*-irreducible inclusions.

arXiv comment23 pages. v2: A couple of minor changes and some typos corrected. The paper has been slightly reorganized. v3: Final version, incorporating some improvements suggested by the referee. To appear in jFA

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Cited by in corpus (1)

• $C^{\ast }$-irreducibility of commensurated subgroups