James Fletcher

activity

20172019

most citedIterating the Cuntz-Nica-Pimsner construction for compactly aligned product systems

6 citations · 10 across the 6 of their papers we have counts for

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Showing 2019Show all

3 papers · 1 filter

math.OA2019★ 2 cited

Homotopy of product systems and K-theory of Cuntz-Nica-Pimsner algebras

James Fletcher, Elizabeth Gillaspy, Aidan Sims

We introduce the notion of a homotopy of product systems, and show that the Cuntz-Nica-Pimsner algebras of homotopic product systems over N^k have isomorphic K-theory. As an applic…

math.OA2019★ 2 cited

Groupoid algebras as covariance algebras

Lisa Orloff Clark, James Fletcher

Suppose $G$ is a second-countable locally compact Hausdorff étale groupoid, $G$ is a discrete group containing a unital subsemigroup $P$ , and $c : G \to G$ …

math.OA2019

All classifiable Kirchberg algebras are $C^{*}$ -algebras of ample groupoids

Lisa Orloff Clark, James Fletcher, Astrid an Huef

In this note we show that every Kirchberg algebra in the UCT class is the $C^{*}$ -algebra of a Hausdorff, ample, amenable and locally contracting groupoid. The non-unital case f…

Homotopy of product systems and K-theory of Cuntz-Nica-Pimsner algebras

Groupoid algebras as covariance algebras

All classifiable Kirchberg algebras are C∗-algebras of ample groupoids

All classifiable Kirchberg algebras are $C^{*}$ -algebras of ample groupoids