3 citations · 3 across the 3 of their papers we have counts for
6 papers
Intermediate subalgebras for reduced crossed products of discrete groups
Matthew Kennedy, Dan Ursu
Let be an action of a discrete group on a unital C*-algebra by *-automorphisms and let denote the corresponding reduced crossed…
Simplicity of crossed products by FC-hypercentral groups
Shirly Geffen, Dan Ursu
In this paper, we give a complete, two-way characterization, of when a noncommutative crossed product is simple, in the case of being an FC-hypercentral group. T…
The ideal intersection property for essential groupoid C*-algebras
Matthew Kennedy, Se-Jin Kim, Xin Li +2
We characterise, in several complementary ways, étale groupoids with locally compact Hausdorff space of units whose essential groupoid C*-algebra has the ideal intersection propert…
A generalized Powers averaging property for commutative crossed products
Tattwamasi Amrutam, Dan Ursu
We prove a generalized version of Powers' averaging property that characterizes simplicity of reduced crossed products , where is a countable discrete group, a…
Characterizing traces on crossed products of noncommutative C*-algebras
Dan Ursu
We give complete descriptions of the tracial states on both the universal and reduced crossed products of a C*-dynamical system consisting of a unital C*-algebra and a discrete gro…
Relative C*-simplicity and characterizations for normal subgroups
Dan Ursu
The notion of a plump subgroup was recently introduced by Amrutam. This is a relativized version of Powers' averaging property, and it is known that Powers' averaging property is e…