English

Homotopies of constant Cuntz class

Operator Algebras 2022-03-09 v2

Abstract

Let AA be a unital simple separable exact C^*-algebra which is approximately divisible and of real rank zero. We prove that the set of positive elements in AA with a fixed Cuntz class is path connected. This result applies in particular to irrational rotation algebras and AF algebras.

Keywords

Cite

@article{arxiv.2202.10428,
  title  = {Homotopies of constant Cuntz class},
  author = {Andrew S. Toms},
  journal= {arXiv preprint arXiv:2202.10428},
  year   = {2022}
}

Comments

10 pages, no figures, v2, minor corrections and acknowledgement added