Showing math.OAShow all
2 papers · 1 filter
math.OA2025
Generalised Twisted Groupoids and their C*-algebras
Lisa Orloff Clark, Michael à Ceallaigh, Hung Pham
We consider a locally compact Hausdorff groupoid , and twist by a more general locally compact Hausdorff abelian group rather than the complex unit circle . We…
math.OA2025
Cartan semigroups and twisted groupoid C*-algebras
Tristan Bice, Lisa Orloff Clark, Ying-Fen Lin +1
We prove that twisted groupoid C*-algebras are characterised, up to isomorphism, by having Cartan semigroups, a natural generalisation of normaliser semigroups of Cartan subalgebra…