Xin Ma

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math.OA2024

Almost elementary groupoid models for $C^{*}$ -algebras

Xin Ma, Jianchao Wu

The notion of almost elementariness for a locally compact Hausdorff étale groupoid $G$ with a compact unit space was introduced by the authors as a sufficient condition e…

math.OA2024

Non-free almost finite actions for locally finite-by-virtually $Z$ groups

Kang Li, Xin Ma

In this paper, we study almost finiteness and almost finiteness in measure of non-free actions. Let $I^\pm : G ↷ X$ be a minimal action of a locally finite-by-virtually $\…

Almost elementary groupoid models for C∗-algebras

Non-free almost finite actions for locally finite-by-virtually Z groups

Almost elementary groupoid models for $C^{*}$ -algebras

Non-free almost finite actions for locally finite-by-virtually $Z$ groups