2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/59665We characterize the ideal of continuous-trace elements in a separable transformation-group $C^{*}$-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/Operator AlgebrasFunctional Analysis46L05text