English

A short note on the continuous Rokhlin property and the universal coefficient theorem

Operator Algebras 2015-12-22 v1

Abstract

Let GG be a metrizable compact group, AA a separable C*-algebra and α\alpha a strongly continuous action of GG on AA. Provided that α\alpha satisfies the continuous Rokhlin property, we show that the property of satisfying the UCT in E-theory passes from AA to the crossed product C*-algebra AαGA\rtimes_\alpha G and the fixed point algebra AαA^\alpha. This extends a result by Gardella in the case that GG is the circle and AA is nuclear. For circle actions on separable, unital C*-algebras with the continuous Rokhlin property, we establish a connection between the EE-theory equivalence class of the coefficient algebra AA and the fixed point algebra AαA^\alpha.

Keywords

Cite

@article{arxiv.1408.2365,
  title  = {A short note on the continuous Rokhlin property and the universal coefficient theorem},
  author = {Gabor Szabo},
  journal= {arXiv preprint arXiv:1408.2365},
  year   = {2015}
}

Comments

7 pages

R2 v1 2026-06-22T05:24:58.303Z