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Simplicity of algebras associated to ,tale groupoids
Journal article   Peer reviewed

Simplicity of algebras associated to ,tale groupoids

Jonathan Brown, Lisa Orloff Clark, Cynthia Farthing and Aidan Sims
Semigroup forum, Vol.88(2), pp.433-452
04/01/2014
DOI: 10.1007/s00233-013-9546-z

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Abstract

We prove that the full C (au)-algebra of a second-countable, Hausdorff, ,tale, amenable groupoid is simple if and only if the groupoid is both topologically principal and minimal. We also show that if G has totally disconnected unit space, then the complex (au)-algebra of its inverse semigroup of compact open bisections, as introduced by Steinberg, is simple if and only if G is both effective and minimal.
Mathematics Physical Sciences Science & Technology

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