English

On the escape rate of unique beta-expansions

Dynamical Systems 2016-11-22 v2 Number Theory

Abstract

Let 1<β21<\beta \leq 2. It is well-known that the set of points in % [0,1/(\beta -1)] having unique β\beta -expansion, in other words, those points whose orbits under greedy β\beta -transformation escape a hole depending on β\beta , is of zero Lebesgue measure. The corresponding escape rate is investigated in this paper. A formula which links the Hausdorff dimension of univoque set and escape rate is established in this study. Then we also proved that such rate forms a devil's staircase function with respect to β\beta .

Keywords

Cite

@article{arxiv.1510.01117,
  title  = {On the escape rate of unique beta-expansions},
  author = {Jung-Chao Ban and Chih-Hung Chang and Bing Li},
  journal= {arXiv preprint arXiv:1510.01117},
  year   = {2016}
}