Ring and module structures on dimension groups associated with a shift of finite type

Details Ring and module structures on dimension groups associated with a shift of finite type Ring and module structures on dimension groups associated with a shift of finite type

2011-04-06

arxiv.org/abs/1104.1154v2

Mathematics

Dynamical Systems

Scientific paper

We study invariants for shifts of finite type obtained as the K-theory of various C*-algebras associated with them. These invariants have been studied intensely over the past thirty years since their introduction by Wolfgang Krieger. They may be given quite concrete descriptions as inductive limits of simplicially ordered free abelian groups. Shifts of finite type are special cases of Smale spaces and, in earlier work, the second author has shown that the hyperbolic structure of the dynamics in a Smale space induces natural ring and module structures on certain of these K-groups. Here, we restrict our attention to the special case of shifts of finite type and obtain explicit descriptions in terms of the inductive limits.

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