%0 Journal Article
%T New holomorphically closed subalgebras of $C^*$-algebras of hyperbolic groups
%A Michael Puschnigg
%J Mathematics
%D 2009
%I arXiv
%X We construct dense, unconditional subalgebras of the reduced group $C^*$-algebra of a word-hyperbolic group, which are closed under holomorphic functional calculus and possess many bounded traces. Applications to the cyclic cohomology of group $C^*$-algebras and to delocalized $L^2$-invariants of negatively curved manifolds are given.
%U http://arxiv.org/abs/0904.3675v1