Astrid an Huef, Victoria University of Wellington
Nuclear dimension of C*-algebras of groupoids.
Let G be a locally compact, Hausdorff groupoid. Guentner, Willet and Yu defined a notion of dynamic asymptotic dimension (dad) for etale groupoids, and used it to find a bound on the nuclear dimension of C*-algebras of principal groupoids with finite dad. To have finite dad, a groupoid must have locally finite isotropy subgroups which rules out, for example, the graph groupoids and twists of etale groupoids by trivial circle bundles. I will discuss how the techniques of Guentner, Willett and Yu can be adjusted to include some groupoids with large isotropy subgroups, including an applications to C*-algebras of directed graphs that are AF-embeddable. This is joint work with Dana Williams.
MC 5417
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