Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2G1 ; Institut für Angewandte Mathematik, Universität Heidelberg, Im Neuenheimer Feld, Gebäude 294, 69120 Heidelberg, Germany
Abstract:
We establish some characterizations of the weak fixed point property (weak fpp) for noncommutative (and commutative) spaces and use this for the Fourier algebra of a locally compact group In particular we show that if is an IN-group, then has the weak fpp if and only if is compact. We also show that if is any locally compact group, then has the fixed point property (fpp) if and only if is finite. Furthermore if a nonzero closed ideal of has the fpp, then must be discrete.