A Homology Theory for Smale Spaces
Author | : Ian F. Putnam |
Publisher | : American Mathematical Soc. |
Total Pages | : 136 |
Release | : 2014-09-29 |
ISBN-10 | : 9781470409098 |
ISBN-13 | : 1470409097 |
Rating | : 4/5 (98 Downloads) |
Book excerpt: The author develops a homology theory for Smale spaces, which include the basics sets for an Axiom A diffeomorphism. It is based on two ingredients. The first is an improved version of Bowen's result that every such system is the image of a shift of finite type under a finite-to-one factor map. The second is Krieger's dimension group invariant for shifts of finite type. He proves a Lefschetz formula which relates the number of periodic points of the system for a given period to trace data from the action of the dynamics on the homology groups. The existence of such a theory was proposed by Bowen in the 1970s.