Dixmier-Douady for Dummies

Abstract

The Dixmier-Douady invariant is the primary tool in the classification of continuous trace $C^{\ast }$-algebras. This expository note explores its properties from the perspective of classical algebraic topology.

Typos corrected, very minor changes. This paper has been accepted by the Notices AMS and will appear as a feature article - projected for August 2009

References in corpus (2)

• Twisted K-theory, old and new
• Continuous trace C*-algebras, gauge groups and rationalization