English

A priori bounds for some infinitely renormalizable quadratic: IV. Elephant Eyes

Dynamical Systems 2026-01-30 v1

Abstract

In this paper we prove a priori bounds for an ``elephant eye'' combinatorics. Little MM-copies specifying these combinatorics are allowed to converge to the cusp of the Mandelbrot set. To handle it, we develope a new geometric tool: uniform thin-thick decompositions for bordered Riemann surfaces.

Keywords

Cite

@article{arxiv.2601.21905,
  title  = {A priori bounds for some infinitely renormalizable quadratic: IV. Elephant Eyes},
  author = {Jeremy Kahn and Misha Lyubich},
  journal= {arXiv preprint arXiv:2601.21905},
  year   = {2026}
}