Return time sets and product recurrence
Dynamical Systems
2026-02-04 v2
Abstract
Let be a countable infinite discrete group. We show that a subset of contains a return time set of some piecewise syndetic recurrent point in a compact Hausdorff space with a -action if and only if is a quasi-central set. As an application, we show that if a nonempty closed subsemigroup of the Stone-\v{C}ech compactification contains the smallest ideal of then -product recurrent is equivalent to distality, which partially answers a question of Auslander and Furstenberg (Trans. Amer. Math. Soc. 343, 1994, 221--232).
Cite
@article{arxiv.2406.18231,
title = {Return time sets and product recurrence},
author = {Jian Li and Xianjuan Liang and Yini Yang},
journal= {arXiv preprint arXiv:2406.18231},
year = {2026}
}
Comments
32 pages, to appear in Fund. Math