63 citations · 280 across the 35 of their papers we have counts for
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math.OA2019★ 4 cited
Approximate ideal structures and K-theory
Rufus Willett
We introduce a notion of approximate ideal structure for a -algebra, and use it as a tool to study -theory groups. The notion is motivated by the classical Mayer-Vietoris s…
math.OA2019
Injectivity, crossed products, and amenable group actions
Alcides Buss, Siegfried Echterhoff, Rufus Willett
This paper is motivated primarily by the question of when the maximal and reduced crossed products of a --algebra agree (particularly inspired by results of Matsumura and S…
math.KT2019
Bott periodicity and almost commuting matrices
Rufus Willett
We give a proof of the Bott periodicity theorem for topological K-theory of C*-algebras based on Loring's treatment of Voiculescu's almost commuting matrices and Atiyah's rotation…