67 citations · 259 across the 48 of their papers we have counts for
47 papers · 1 filter
Properties Preserved by Groupoid Equivalence
Daniel W. van Wyk, Dana P. Williams
We show that groupoid equivalence preserves a number of groupoid properties such as properness or the property of being topologically principal.
Renault's -map for Fell bundle -algebras
Anna Duwenig, Dana P. Williams, Joel Zimmerman
If is a Fell bundle over an étale groupoid, then we show that there is an norm reducing injective linear map $j \colon C^*_r(G;\mathcal B)\to Γ_{0}(G;\ma…
The Primitive Ideal Space of Groupoid C*-Algebras for Groupoids with Abelian Isotropy
Daniel W. van Wyk, Dana P. Williams
We study the topology of the primitive ideal space of groupoid C*-algebras for groupoids with abelian isotropy. Our results include the known results for action groupoids with abel…
Pushouts of extensions of groupoids by bundles of abelian groups
Marius Ionescu, Alex Kumjian, Jean N. Renault +2
We analyse extensions of groupoids by bundles of abelian groups. We describe a pushout construction for such extensions, and use it to describe the extension group of a…
Groupoid Semidirect Product Fell Bundles II- Principal Actions and Stabilization
Lucas Hall, S. Kaliszewski, John Quigg +1
Given a free and proper action of a groupoid on a Fell bundle (over another groupoid), we give an equivalence between the semidirect-product and the generalized-fixed-point Fell bu…
Groupoid Semidirect Product Fell Bundles I- Actions by Isomorphisms
Lucas Hall, S. Kaliszewski, John Quigg +1
Given an action of a groupoid by isomorphisms on a Fell bundle (over another groupoid), we form a semidirect-product Fell bundle, and prove that its -algebra is isomorphic t…