English

Tongues in Degree 4 Blaschke Products

Dynamical Systems 2016-10-07 v1

Abstract

The goal of this paper is to investigate the family of Blasche products Ba(z)=z3za1aˉzB_a(z)=z^3\frac{z-a}{1-\bar{a}z}, which is a rational family of perturbations of the doubling map. We focus on the tongue-like sets which appear in its parameter plane. We first study their basic topological properties and afterwords we investigate how bifurcations take place in a neighborhood of their tips. Finally we see how the period one tongue extends beyond its natural domain of definition.

Keywords

Cite

@article{arxiv.1510.07860,
  title  = {Tongues in Degree 4 Blaschke Products},
  author = {Jordi Canela and Núria Fagella and Antonio Garijo},
  journal= {arXiv preprint arXiv:1510.07860},
  year   = {2016}
}