63 citations · 280 across the 35 of their papers we have counts for
4 papers · 1 filter
Topological property (T) for groupoids
Clément Dell'Aiera, Rufus Willett
We introduce a notion of topological property (T) for étale groupoids. This simultaneously generalizes Kazhdan's property (T) for groups and geometric property (T) for coarse space…
The maximal injective crossed product
Alcides Buss, Siegfried Echterhoff, Rufus Willett
A crossed product functor is said to be injective if it takes injective morphisms to injective morphisms. In this paper we show that every locally compact group admits a maxima…
Cartan subalgebras in uniform Roe algebras
Stuart White, Rufus Willett
In this paper we study structural and uniqueness questions for Cartan subalgebras of uniform Roe algebras. We characterise when an inclusion of -algebr…
The minimal exact crossed product
Alcides Buss, Siegfried Echterhoff, Rufus Willett
Given a locally compact group , we study the smallest exact crossed-product functor on the category of --dynamical systems. As a…