The Dixmier-Douady Class of Groupoid Crossed Products
Paul S. Muhly, Dana P. Williams
math.OAarXiv:math/0209125
Abstract
We give a formula for the Dixmier-Douady class of a continuous-trace groupoid crossed product that arises from an action of a locally trivial, proper, principal groupoid on a bundle of elementary C*-algebras that satisfies Fell's condition.
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