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${C}^{\ast } $-ALGEBRAS WITH FINITE GROUPS
We study the space of irreducible representations of a crossed product 
${C}^{\ast } $-algebra 
${\mathop{A\rtimes }\nolimits}_{\sigma } G$, where 
$G$ is a finite group. We construct a space 
$\widetilde {\Gamma } $ which consists of pairs of irreducible representations of 
$A$ and irreducible projective representations of subgroups of 
$G$. We show that there is a natural action of 
$G$ on 
$\widetilde {\Gamma } $ and that the orbit space 
$G\setminus \widetilde {\Gamma } $ corresponds bijectively to the dual of 
${\mathop{A\rtimes }\nolimits}_{\sigma } G$.
