The Rokhlin dimension of topological Z^m-actions

Gabor Szabo (University of Muenster)

Tuesday 18th February, 2014 16:00-17:00 Maths 416

Abstract

We study the topological variant of Rokhlin dimension for topological dynamical systems (X,\alpha,Z^m) in the case where X is assumed to have finite covering dimension. Finite Rokhlin dimension in this sense is a property that implies finite Rokhlin dimension of the induced action on C*-algebraic level, as was discussed in a recent paper by Hirshberg, Winter and Zacharias. In particular, it implies under these conditions that the transformation group C*-algebra has finite nuclear dimension. Generalizing partial results of Lindenstrauss and Gutman, we show that free Z^m-actions on finite dimensional spaces satisfy a strengthened version of the so-called marker property, which yields finite Rokhlin dimension for such actions.