Vol. 136, No. 2, 1989

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The Cāˆ—-algebras associated with minimal homeomorphisms of the Cantor set

Ian Fraser Putnam

Vol. 136 (1989), No. 2, 329ā€“353
Abstract

We investigate the structure of the C-algebras associated with minimal homeomorphisms of the Cantor set via the crossed product construction. These C-algebras exhibit many of the same properties as approximately finite dimensional (or AF) C-algebras. Specifically, each non-empty closed subset of the Cantor set is shown to give rise, in a natural way, to an AF-subalgebra of the crossed product and we analyze these subalgebras. Results of Versik show that the crossed product may be embedded into an AF-algebra. We show that this embedding induces an order isomorphism at the level of K0-groups. We examine examples arising from the theory of interval exchange transformations.

Mathematical Subject Classification 2000
Primary: 46L80
Secondary: 19K99, 46L55, 58F11
Milestones
Received: 3 November 1987
Published: 1 February 1989
Authors
Ian Fraser Putnam