2003 Volume 39 Issue 2 Pages 205-225
In this paper we first analyze the algebraic structure of group C*-algebras of the generalized Dixmier groups, and next consider that of group C*-algebras of some Lie semi-direct products with multi-diagonal or diagonal actions. As an application, we estimate the stable rank and the connected stable rank of these C*-algebras in terms of groups. Also, we show that some of these group C*-algebras have no nontrivial projections.
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