Title

Equivalent groupoids have Morita equivalent Steinberg algebras

RIS ID

92400

Publication Details

Clark, L. & Sims, A. D. (2015). Equivalent groupoids have Morita equivalent Steinberg algebras. Journal of Pure and Applied Algebra, 219 (6), 2062-2075.

Abstract

Let G and H be ample groupoids and let R be a commutative unital ring. We show that if G and H are equivalent in the sense of Muhly-Renault-Williams, then the associated Steinberg algebras are Morita equivalent. We deduce that collapsing a "collapsible subgraph" of a directed graph in the sense of Crisp and Gow does not change the Morita-equivalence class of the associated Leavitt path R-algebra, and therefore a number of graphical constructions which yield Morita equivalent C*-algebras also yield Morita equivalent Leavitt path algebras.

Grant Number

ARC/DP120100507, ARC/FT100100533

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