The Rokhlin Property for Automorphisms on Simple C*-Algebras

Details The Rokhlin Property for Automorphisms on Simple C*-Algebras The Rokhlin Property for Automorphisms on Simple C*-Algebras

2009-11-15

arxiv.org/abs/0911.2867v2

Mathematics

Operator Algebras

7 pages

Scientific paper

Let $\mathcal{A}$ be the class of unital separable simple amenable $C$*-algebras $A$ which satisfy the Universal Coefficient Theorem for which $A\otimes M_{\texttt{P}}$ has tracial rank zero for some supernatural number $\texttt{p}$ of infinite type. Let $A\in \mathcal{A}$ and let $\alpha$ be an automorphism of $A.$ Suppose that $\alpha$ has the tracial Rokhlin property. Suppose also that there is an integer $J\geq 1$ such that $[\alpha^J]=[\mbox{id}_A]$ in $KL(A,A)$, we show that $A\rtimes_{\alpha}\mathbb{Z}\in \mathcal{A}.$

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