%0 Journal Article
%T Non-K-exact uniform Roe C*-algebras
%A Jan Spakula
%J Mathematics
%D 2009
%I arXiv
%X We prove that uniform Roe C*-algebras associated to some expander graphs coming from discrete groups with property (\tau) are not K-exact. In particular, we show that this is the case for the expander obtained as Cayley graphs of a sequence of alternating groups (with appropriately chosen generating sets).
%U http://arxiv.org/abs/0907.2249v1