English

Hausdorff dimension of recurrence sets for matrix transformations of tori

Dynamical Systems 2024-02-08 v1

Abstract

Let T ⁣:TdTdT\colon\mathbb{T}^d\to \mathbb{T}^d, defined by Tx=Ax(mod1)T x=Ax(\bmod 1), where AA is a d×dd\times d integer matrix with eigenvalues 1<λ1λ2λd1<|\lambda_1|\le|\lambda_2|\le\dots\le|\lambda_d|. We investigate the Hausdorff dimension of the recurrence set R(ψ):={xTd ⁣:TnxB(x,ψ(n)) for infinitely many n}R(\psi):=\{x\in\mathbb{T}^d\colon T^nx\in B(x,\psi(n)) {\rm ~for~infinitely~ many~}n\} for αlogλd/λ1\alpha\ge\log|\lambda_d/\lambda_1|, where ψ\psi is a positive decreasing function defined on N\mathbb{N} and its lower order at infinity is α=lim infnlogψ(n)n\alpha=\liminf\limits_{n\to\infty}\frac{-\log \psi(n)}{n}. In the case that AA is diagonalizable over Q\mathbb{Q} with integral eigenvalues, we obtain the dimension formula.

Keywords

Cite

@article{arxiv.2402.04810,
  title  = {Hausdorff dimension of recurrence sets for matrix transformations of tori},
  author = {Zhangnan Hu and Bing Li},
  journal= {arXiv preprint arXiv:2402.04810},
  year   = {2024}
}