English

On eventually always hitting points

Dynamical Systems 2021-08-31 v2

Abstract

We consider dynamical systems (X,T,μ)(X,T,\mu) which have exponential decay of correlations for either H\"older continuous functions or functions of bounded variation. Given a sequence of balls (Bn)n=1(B_n)_{n=1}^\infty, we give sufficient conditions for the set of eventually always hitting points to be of full measure. This is the set of points xx such that for all large enough mm, there is a k<mk < m with Tk(x)BmT^k (x) \in B_m. We also give an asymptotic estimate as mm \to \infty on the number of k<mk < m with Tk(x)BmT^k (x) \in B_m. As an application, we prove for almost every point xx an asymptotic estimate on the number of kmk \leq m such that akmta_k \geq m^t, where t(0,1)t \in (0,1) and aka_k are the continued fraction coefficients of xx.

Keywords

Cite

@article{arxiv.2010.07714,
  title  = {On eventually always hitting points},
  author = {Charis Ganotaki and Tomas Persson},
  journal= {arXiv preprint arXiv:2010.07714},
  year   = {2021}
}

Comments

minor changes. 18 pages

R2 v1 2026-06-23T19:22:27.235Z