Multiple recurrence and convergence results associated to -actions
arXiv:1305.4717
Abstract
Using an ergodic inverse theorem obtained in our previous paper, we obtain limit formulae for multiple ergodic averages associated with the action of . From this we deduce multiple Khintchine-type recurrence results analogous to those for -systems obtained by Bergelson, Host, and Kra, and also present some new counterexamples in this setting.
44 pages, no figures. Referee suggestions implemented