47 citations · 303 across the 41 of their papers we have counts for
4 papers · 2 filters
Structure of crossed products by strictly proper actions on continuous-trace algebras
Siegfried Echterhoff, Dana P. Williams
We examine the ideal structure of crossed products B\rtimes G where B is a continuous-trace C*-algebra and the induced action of G on the spectrum of B is proper. In particular, we…
On the K-theory of crossed products by automorphic semigroup actions
Joachim Cuntz, Siegfried Echterhoff, Xin Li
Let P be a semigroup that admits an embedding into a group G. Assume that the embedding satisfies a certain Toeplitz condition and that the Baum-Connes conjecture holds for G. We p…
The primitive ideal space of the C*-algebra of the affine semigroup of algebraic integers
Siegfried Echterhoff, Marcelo Laca
We give a complete description of the primitive ideal space of the C*-algebra associated to the ring of integers R in a number field K as considered in a recent paper by Cuntz, Den…
On the K-theory of the C*-algebra generated by the left regular representation of an Ore semigroup
Joachim Cuntz, Siegfried Echterhoff, Xin Li
We compute the K-theory of C*-algebras generated by the left regular representation of left Ore semigroups satisfying certain regularity conditions. Our result describes the K-theo…