Ideals in transformation-group $C^{\ast }$-algebras

Abstract

We characterize the ideal of continuous-trace elements in a separable transformation-group $C^{\ast }$-algebra $C_0(X)\times G$. In addition, we identify the largest Fell ideal, the largest liminal ideal and the largest postliminal ideal.

12 Pages. See also http://www.cs.du.edu/~astrid/research.html/