English

On uniform recurrence for hyperbolic automorphisms of the $2$-dimensional torus

Dynamical Systems 2024-02-02 v1

Abstract

We are interested in studying sets of the form U(α):={xX: M=M(x)1 such that NM, nN such that d(Tnx,x)λαN} \mathcal{U}(\alpha) := \left\{ x\in X: \ \exists M=M(x) \geq 1 \text{ such that } \forall N\geq M, \ \exists n\leq N \text{ such that } d(T^nx, x) \leq |\lambda|^{-\alpha N} \right\} where (X,T,d)(X,T,d) is our metric dynamical system and λ>1|\lambda|>1. Although a lot of results exist for the one dimensional case, not as many are known for systems in higher dimensions and especially in the hyperbolic case. We consider X=T2X=\mathbb{T}^2, T(x)=Ax(mod1)T(x) = Ax \pmod{1}, where AA is a hyperbolic, area preserving, 2×22\times 2 matrix with integer entries and λ\lambda is the eigenvalue of AA of modulus larger than 11 and we explicitly calculate the Hausdorff dimension of this set.

Keywords

Cite

@article{arxiv.2402.00690,
  title  = {On uniform recurrence for hyperbolic automorphisms of the $2$-dimensional torus},
  author = {Georgios Lamprinakis and Tomas Persson and Alejandro Rodriguez Sponheimer},
  journal= {arXiv preprint arXiv:2402.00690},
  year   = {2024}
}