Stable rank of $\mathrm{C}(X)\rtimes\Gamma$
Operator Algebras
2023-07-18 v2 Dynamical Systems
Abstract
It is shown that, for an arbitrary free and minimal -action on a compact Hausdorff space , the crossed product C*-algebra always has stable rank one, i.e., invertible elements are dense. This generalizes a result of Alboiu and Lutley on -actions. In fact, for any free and minimal topological dynamical system , where is a countable discrete amenable group, if it has the uniform Rokhlin property and Cuntz comparison of open sets, then the crossed product C*-algebra has stable rank one. Moreover, in this case, the C*-algebra absorbs the Jiang-Su algebra tensorially if, and only if, it has strict comparison of positive elements.
Keywords
Cite
@article{arxiv.2008.03361,
title = {Stable rank of $\mathrm{C}(X)\rtimes\Gamma$},
author = {Chun Guang Li and Zhuang Niu},
journal= {arXiv preprint arXiv:2008.03361},
year = {2023}
}
Comments
The previous version is revised, and an error in the proof of Lemma 7.2 is fixed