Simple C*-crossed products with a unique trace

  title={Simple C*-crossed products with a unique trace},
  author={Erik Christopher Bedos},
  journal={Ergodic Theory and Dynamical Systems},
  pages={415 - 429}
  • E. Bedos
  • Published 1 June 1996
  • Mathematics
  • Ergodic Theory and Dynamical Systems
Abstract Let (α, u) denote a cocycle-crossed action of a discrete group G on a unital C*-algebra A, and B = C*r (A, G, α, u) the associated reduced (twisted) C*-crossed product. We discuss the following problem: when is B a simple C*-algebra with a unique trace? To this aim, we introduce the concept of tracially properly outerness of actions. 
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