English

Induced dynamics of non-autonomous dynamical systems

Dynamical Systems 2022-03-01 v1

Abstract

Let f0,={fn}n=0f_{0,\infty}=\{f_n\}_{n=0}^{\infty} be a sequence of continuous self-maps on a compact metric space XX. The non-autonomous dynamical system (X,f0,)(X,f_{0,\infty}) induces the set-valued system (K(X),fˉ0,)(\mathcal{K}(X), \bar{f}_{0,\infty}) and the fuzzified system (F(X),f~0,)(\mathcal{F}(X),\tilde{f}_{0,\infty}). We prove that under some natural conditions, positive topological entropy of (X,f0,)(X,f_{0,\infty}) implies infinite entropy of (K(X),fˉ0,)(\mathcal{K}(X),\bar{f}_{0,\infty}) and (F(X),f~0,)(\mathcal{F}(X),\tilde{f}_{0,\infty}), respectively; and zero entropy of (S1,f0,)(S^1,f_{0,\infty}) implies zero entropy of some invariant subsystems of (K(S1),fˉ0,)(\mathcal{K}(S^1),\bar{f}_{0,\infty}) and (F(S1),f~0,)(\mathcal{F}(S^1),\tilde{f}_{0,\infty}), respectively. We confirm that (K(I),fˉ)(\mathcal{K}(I), \bar{f}) and (F(I),f~)(\mathcal{F}(I), \tilde{f}) have infinite entropy for any transitive interval map ff. In contrast, we construct a transitive non-autonomous system (I,f0,)(I, f_{0,\infty}) such that both (K(I),fˉ0,)(\mathcal{K}(I), \bar{f}_{0,\infty}) and (F(I),f~0,)(\mathcal{F}(I), \tilde{f}_{0,\infty}) have zero entropy. We obtain that (K(X),fˉ0,)(\mathcal{K}(X),\bar{f}_{0,\infty}) is chain weakly mixing of all orders if and only if (F1(X),f~0,)(\mathcal{F}^1(X),\tilde{f}_{0,\infty}) is so, and chain mixing (resp. hh-shadowing and multi-F\mathscr{F}-sensitivity) among (X,f0,)(X,f_{0,\infty}), (K(X),fˉ0,)(\mathcal{K}(X),\bar{f}_{0,\infty}) and (F1(X),f~0,)(\mathcal{F}^1(X),\tilde{f}_{0,\infty}) are equivalent, where (F1(X),f~0,)(\mathcal{F}^1(X),\tilde{f}_{0,\infty}) is the induced normal fuzzification.

Keywords

Cite

@article{arxiv.2202.13345,
  title  = {Induced dynamics of non-autonomous dynamical systems},
  author = {Hua Shao},
  journal= {arXiv preprint arXiv:2202.13345},
  year   = {2022}
}
R2 v1 2026-06-24T09:55:20.319Z