Classification of simple C*-algebras and higher dimensional noncommutative tori
classification
🧮 math.OA
math.FA
keywords
algebrassimpleclassificationdimensionalhighermathbborderedtheory
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We show that unital simple C*-algebras with tracial topological rank zero which are locally approximated by subhomogeneous C^-algebras can be classified by their ordered $K$-theory. We apply this classification result to show that certain simple crossed products are isomorphic if they have the same ordered $K$-theory. In particular, irrational higher dimensional non-commutative tori of the form $C({\mathbb T}^k)\times_{\theta}{\mathbb Z}$ are in fact inductive limits of circle algebras.
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