English

Julia sets with a wandering branching point

Dynamical Systems 2018-03-08 v2

Abstract

According to the Thurston No Wandering Triangle Theorem, a branching point in a locally connected quadratic Julia set is either preperiodic or precritical. Blokh and Oversteegen proved that this theorem does not hold for higher degree Julia sets: there exist cubic polynomials whose Julia set is a locally connected dendrite with a branching point which is neither preperiodic nor precritical. In this article, we reprove this result, constructing such cubic polynomials as limits of cubic polynomials for which one critical point eventually maps to the other critical point which eventually maps to a repelling fixed point.

Keywords

Cite

@article{arxiv.1801.09539,
  title  = {Julia sets with a wandering branching point},
  author = {Xavier Buff and Jordi Canela and Pascale Roesch},
  journal= {arXiv preprint arXiv:1801.09539},
  year   = {2018}
}

Comments

21 pages, 13 figures

R2 v1 2026-06-23T00:01:18.268Z