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Generalized Bunce-Deddens algebras

Author(s): Stefanos Orfanos
Journal: Proc. Amer. Math. Soc. 138 (2010), 299-308.
MSC (2000): Primary 47A66, 47L65
Posted: August 31, 2009
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Abstract: We define a broad class of crossed product C*-algebras of the form $ C(\tilde{G})\rtimes G$, where $ G$ is a discrete countable amenable residually finite group, and $ \tilde{G}$ is a profinite completion of $ G$. We show that they are unital separable simple nuclear quasidiagonal C*-algebras, of real rank zero, stable rank one, with comparability of projections and with a unique trace.

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Additional Information:

Stefanos Orfanos
Affiliation: Department of Mathematical Sciences, University of Cincinnati, Cincinnati, Ohio 45221
Email: stefanos.orfanos@uc.edu

DOI: 10.1090/S0002-9939-09-10071-0
PII: S 0002-9939(09)10071-0
Keywords: Bunce--Deddens algebras, profinite completion, amenable groups, almost AF groupoids.
Received by editor(s): November 30, 2008,
Received by editor(s) in revised form: June 7, 2009
Posted: August 31, 2009
Communicated by: Marius Junge
Copyright of article: Copyright 2009, American Mathematical Society
The copyright for this article reverts to public domain after 28 years from publication.

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