Develops a systematic general approach to the proof of ergodic theorems for alarge class of nonamenable locally compact groups and their lattice subgroups.This ... » 

Develops a systematic general approach to the proof of ergodic theorems for alarge class of nonamenable locally compact groups and their lattice subgroups.This book formulates simple general conditions on the spectral theory of thegroup and the regularity of the averaging sets which suffice to guaranteeconvergence to the ergodic mean. «