Limit C*-algebras associated with an automorphism

Details Limit C*-algebras associated with an automorphism Limit C*-algebras associated with an automorphism

2003-12-03

arxiv.org/abs/math/0312089v1

Mathematics

Operator Algebras

Latex file, To appear in Math. Scand

Scientific paper

We present and study C*-algebras generated by "periodic weighted creation operators" on the Fock space associated with an automorphism $\alpha$ on a C*-algebra $A$. These algebras can be viewed as generalized Bunce-Deddens algebras associated with the automorphism and can be written as a certain direct limit. We prove a crossed product presentation for such an algebra and find a necessary and sufficient condition for it to be simple. In the case where the automorphism is induced by an irrational rotation (on $C(\mathbb{T})$) we compute the K-theory groups and obtain a complete classification of these algebras.

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