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Simple real rank zero algebras with locally Hausdorff spectrum
Authors:Ping Wong Ng
Institution:Department of Mathematics and Statistics, University of New Brunswick, Fredericton, New Brunswick, Canada E3B 5A3
Abstract:Let $ \mathcal{A}$ be a unital, simple, separable $ C^*$-algebra with real rank zero, stable rank one, and weakly unperforated ordered $ K_0$ group. Suppose, also, that $ \mathcal{A}$ can be locally approximated by type I algebras with Hausdorff spectrum and bounded irreducible representations (the bound being dependent on the local approximating algebra). Then $ \mathcal{A}$ is tracially approximately finite dimensional (i.e., $ \mathcal{A}$ has tracial rank zero).

Hence, $ \mathcal{A}$ is an $ AH$-algebra with bounded dimension growth and is determined by $ K$-theoretic invariants.

The above result also gives the first proof for the locally $ AH$ case.

Keywords:
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