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Paper   IPM / M / 16524
School of Mathematics
  Title:   The Cuntz semigroup and the radius of comparison of the crossed product by a finite group
  Author(s):  Nasser Golestani (Joint with M. A. Asadi-Vasfi and N. Christopher Philips)
  Status:   Published
  Journal: Ergod. Th. & Dynam. Sys.
  Vol.:  41
  Year:  2021
  Pages:   3541-3592
  Supported by:  IPM
Let G be a finite group, let A be an infinite-dimensional stably finite simple unital C*-algebra, and let α\colon G → \operatornameAut (A) be an action of G on A which has the weak tracial Rokhlin property. Let A\af be the fixed point algebra. Then the radius of comparison satisfies \operatornamerc (Aα) ≤ \operatornamerc (A) and

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