English

Positive entropy implies chaos along any infinite sequence

Dynamical Systems 2022-04-27 v2

Abstract

Let GG be an infinite countable discrete amenable group. For any GG-action on a compact metric space (X,ρ)(X,\rho), it turns out that if the action has positive topological entropy, then for any sequence {si}i=1+\{s_i\}_{i=1}^{+\infty} with pairwise distinct elements in GG there exists a Cantor subset KK of XX which is Li-Yorke chaotic along this sequence, that is, for any two distinct points x,yKx,y\in K, one has lim supi+ρ(six,siy)>0, and lim infi+ρ(six,siy)=0.\limsup_{i\to+\infty}\rho(s_i x,s_iy)>0,\ \text{and}\ \liminf_{i\to+\infty}\rho(s_ix,s_iy)=0.

Keywords

Cite

@article{arxiv.2006.09601,
  title  = {Positive entropy implies chaos along any infinite sequence},
  author = {Wen Huang and Jian Li and Xiangdong Ye},
  journal= {arXiv preprint arXiv:2006.09601},
  year   = {2022}
}

Comments

16 pages. This paper is dedicated to the memory of Anatoly Mikhailovich Stepin

R2 v1 2026-06-23T16:23:34.115Z