English

Transitive points via Furstenberg family

Dynamical Systems 2011-08-18 v2

Abstract

Let (X,T)(X,T) be a topological dynamical system and F\mathcal{F} be a Furstenberg family (a collection of subsets of Z+\mathbb{Z}_+ with hereditary upward property). A point xXx\in X is called an F\mathcal{F}-transitive one if {nZ+:TnxU}\F\{n\in\mathbb{Z}_+:\, T^n x\in U\}\in\F for every nonempty open subset UU of XX; the system (X,T)(X,T) is called \F\F-point transitive if there exists some F\mathcal{F}-transitive point. In this paper, we aim to classify transitive systems by F\mathcal{F}-point transitivity. Among other things, it is shown that (X,T)(X,T) is a weakly mixing E-system (resp.\@ weakly mixing M-system, HY-system) if and only if it is {D-sets}\{\textrm{D-sets}\}-point transitive (resp.\@ {central sets}\{\textrm{central sets}\}-point transitive, {weakly thick sets}\{\textrm{weakly thick sets}\}-point transitive). It is shown that every weakly mixing system is Fip\mathcal{F}_{ip}-point transitive, while we construct an Fip\mathcal{F}_{ip}-point transitive system which is not weakly mixing. As applications, we show that every transitive system with dense small periodic sets is disjoint from every totally minimal system and a system is Δ(Fwt)\Delta^*(\mathcal{F}_{wt})-transitive if and only if it is weakly disjoint from every P-system.

Cite

@article{arxiv.1103.3412,
  title  = {Transitive points via Furstenberg family},
  author = {Jian Li},
  journal= {arXiv preprint arXiv:1103.3412},
  year   = {2011}
}

Comments

Minor changes, 19 pages,to appear in Topology and its applications

R2 v1 2026-06-21T17:40:51.284Z