The Dixmier-Douady Classes of Certain Groupoid $C^{\ast }$-Algebras with Continuous Trace

Marius Ionescu, Alex Kumjian, Aidan Sims +1

Given a locally compact abelian group $G$, we give an explicit formula for the Dixmier--Douady invariant of the $C^{\ast }$-algebra of the groupoid extension associated to a Čech $2$-coc…