English

Criterion for rays landing together

Dynamical Systems 2020-02-11 v3

Abstract

We give a criterion to determine when two external rays land at the same point for polynomials with locally connected Julia sets. As an application, we provide an elementary proof of the monotonicity of the core entropy along arbitrary veins of the Mandelbrot set.

Cite

@article{arxiv.1503.05931,
  title  = {Criterion for rays landing together},
  author = {Jinsong Zeng},
  journal= {arXiv preprint arXiv:1503.05931},
  year   = {2020}
}

Comments

22 pages, 2 figures, writing polished, results unchanged. To appear in Transactions of the American Mathematical Society

R2 v1 2026-06-22T08:57:37.643Z