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Dynamical Borel-Cantelli lemma for recurrence theory

Dynamical Systems 2020-09-09 v1 Number Theory

Abstract

We study the dynamical Borel-Cantelli lemma for recurrence sets in a measure preserving dynamical system (X,μ,T)(X, \mu, T) with a compatible metric dd. We prove that, under some regularity conditions, the μ\mu-measure of the following set R(ψ)={xX:d(Tnx,x)<ψ(n) for infinitely many nN} R(\psi)= \{x\in X : d(T^n x, x) < \psi(n)\ \text{for infinitely many}\ n\in\N \} obeys a zero-full law according to the convergence or divergence of a certain series, where ψ:NR+\psi:\N\to\R^+. Some of the applications of our main theorem include the continued fractions dynamical systems, the beta dynamical systems, and the homogeneous self-similar sets.

Keywords

Cite

@article{arxiv.2009.03515,
  title  = {Dynamical Borel-Cantelli lemma for recurrence theory},
  author = {Mumtaz Hussain and Bing Li and David Simmons and Baowei Wang},
  journal= {arXiv preprint arXiv:2009.03515},
  year   = {2020}
}

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R2 v1 2026-06-23T18:22:52.476Z