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1. CMB 2014 (vol 58 pp. 110)

Kamalov, F.
 Property T and Amenable Transformation Group $C^*$-algebras It is well known that a discrete group which is both amenable and has Kazhdan's Property T must be finite. In this note we generalize the above statement to the case of transformation groups. We show that if $G$ is a discrete amenable group acting on a compact Hausdorff space $X$, then the transformation group $C^*$-algebra $C^*(X, G)$ has Property T if and only if both $X$ and $G$ are finite. Our approach does not rely on the use of tracial states on $C^*(X, G)$. Keywords:Property T, $C^*$-algebras, transformation group, amenableCategories:46L55, 46L05
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