English

On Hausdorff dimension of polynomial not totally disconnected Julia sets

Dynamical Systems 2021-03-08 v4

Abstract

We prove that for every polynomial of one complex variable of degree at least 2 and Julia set not being totally disconnected nor a circle, nor interval, Hausdorff dimension of this Julia set is larger than 1. Till now this was known only in the connected Julia set case. We give also an example of a polynomial with non-connected but not totally disconnected Julia set and such that all its components comprising of more than single points are analytic arcs, thus resolving a question by Christopher Bishop, who asked whether every such component must have Hausdorff dimension larger than 1.

Keywords

Cite

@article{arxiv.2003.12612,
  title  = {On Hausdorff dimension of polynomial not totally disconnected Julia sets},
  author = {Feliks Przytycki and Anna Zdunik},
  journal= {arXiv preprint arXiv:2003.12612},
  year   = {2021}
}

Comments

Abstract slightly reformulated