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math.OA2026
Nuclear dimension of groupoid C*-algebras with large abelian isotropy, with applications to C*-algebras of directed graphs and twists
Astrid an Huef, Dana P. Williams
We characterise when the C*-algebra C*(G) of a locally compact and Hausdorff groupoid G is subhomogeneous, that is, when its irreducible representations have bounded finite dimensi…
math.OA2025
Non-traditional Cartan subalgebras in twisted groupoid C*-algebras
Anna Duwenig, Dana P. Williams, Joel Zimmerman
Well-known work of Renault shows that if is a twist over a second countable, effective, étale groupoid , then there is a naturally associated Cartan subalgebra of…