%0 Journal Article
%T Novikov-Shubin invariants for arbitrary group actions and their positivity
%A Wolfgang Lueck
%A Holger Reich
%A Thomas Schick
%J Mathematics
%D 1998
%I arXiv
%X We extend the notion of Novikov-Shubin invariant for free G-CW-complexes of finite type to spaces with arbitrary G-actions and prove some statements about their positivity. In particular we apply this to classifying spaces of discrete groups.
%U http://arxiv.org/abs/math/9809011v2