$\mathrm{C}^*$-algebras associated to homeomorphisms twisted by vector bundles over finite dimensional spaces
Abstract
In this paper we study Cuntz--Pimsner algebras associated to -correspondences over commutative -algebras from the point of view of the -algebra classification programme. We show that when the correspondence comes from an aperiodic homeomorphism of a finite-dimensional infinite compact metric space twisted by a vector bundle, the resulting Cuntz--Pimsner algebras have finite nuclear dimension. When the homeomorphism is minimal, this entails classification of these -algebras by the Elliott invariant. This establishes a dichotomy: when the vector bundle has rank one, the Cuntz--Pimsner algebra has stable rank one. Otherwise, it is purely infinite. For a Cuntz--Pimsner algebra of a minimal homeomorphism of an infinite compact metric space twisted by a line bundle over , we introduce orbit-breaking subalgebras. With no assumptions on the dimension of , we show that they are centrally large subalgebras and hence simple and stably finite. When the dimension of is finite, they are furthermore -stable and hence classified by the Elliott invariant.
Keywords
Cite
@article{arxiv.2202.10311,
title = {$\mathrm{C}^*$-algebras associated to homeomorphisms twisted by vector bundles over finite dimensional spaces},
author = {Maria Stella Adamo and Dawn E. Archey and Marzieh Forough and Magdalena C. Georgescu and Ja A Jeong and Karen R. Strung and Maria Grazia Viola},
journal= {arXiv preprint arXiv:2202.10311},
year = {2023}
}
Comments
42 pages. Final version. To appear in Trans. Amer. Math. Soc