English

Linear dynamics and recurrence properties defined via essential idempotents of $\beta \mathbb{N}$

Functional Analysis 2016-04-08 v3

Abstract

Consider F\mathscr{F} a non-empty set of subsets of N\mathbb{N}. An operator TT on XX satisfies property PF\mathcal{P}_{\mathscr{F}} if for any UU non-empty open set in XX, there exists xXx\in X such that {nN:TnxU}F\{n\in\mathbb{N}: T^nx\in U\}\in \mathscr{F}. Let BD\overline{\mathcal{BD}} the collection of sets in N\mathbb{N} with positive upper Banach density. Our main result is a characterization of sequence of operators satisfying property PBD\mathcal{P}_{\overline{\mathcal{BD}}}, for which we have used a strong result of Bergelson and Mccutcheon in the vein of Szemer\'{e}di's theorem. It turns out that operators having property PBD\mathcal{P}_{\overline{\mathcal{BD}}} satisfy a kind of recurrence described in terms of essential idempotents of βN\beta \mathbb{N}. We will also discuss the case of weighted backward shifts. Finally, we obtain a characterization of reiteratively hypercyclic operators.

Keywords

Cite

@article{arxiv.1411.7729,
  title  = {Linear dynamics and recurrence properties defined via essential idempotents of $\beta \mathbb{N}$},
  author = {Yunied Puig},
  journal= {arXiv preprint arXiv:1411.7729},
  year   = {2016}
}