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Main Authors: Dudko, Dzmitry, Lyubich, Mikhail
Format: Preprint
Published: 2023
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Online Access:https://arxiv.org/abs/2309.02107
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author Dudko, Dzmitry
Lyubich, Mikhail
author_facet Dudko, Dzmitry
Lyubich, Mikhail
contents We prove a priori bounds for Feigenbaum quadratic polynomials, i.e., infinitely renormalizable polynomials $f_c: z\mapsto z^2+c$ of bounded type. It implies local connectivity of the corresponding Julia sets $J(f_c)$ and MLC (local connectivity of the Mandelbrot set) at the corresponding parameters $c$. It also yields the scaling Universality, dynamical and parameter, for the corresponding combinatorics. The MLC Conjecture was open for the most classical period-doubling Feigenbaum parameter as well as for the complex tripling renormalizations. Universality for the latter was conjectured by Goldberg-Khanin-Sinai in the early 1980s.
format Preprint
id arxiv_https___arxiv_org_abs_2309_02107
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle MLC at Feigenbaum points
Dudko, Dzmitry
Lyubich, Mikhail
Dynamical Systems
We prove a priori bounds for Feigenbaum quadratic polynomials, i.e., infinitely renormalizable polynomials $f_c: z\mapsto z^2+c$ of bounded type. It implies local connectivity of the corresponding Julia sets $J(f_c)$ and MLC (local connectivity of the Mandelbrot set) at the corresponding parameters $c$. It also yields the scaling Universality, dynamical and parameter, for the corresponding combinatorics. The MLC Conjecture was open for the most classical period-doubling Feigenbaum parameter as well as for the complex tripling renormalizations. Universality for the latter was conjectured by Goldberg-Khanin-Sinai in the early 1980s.
title MLC at Feigenbaum points
topic Dynamical Systems
url https://arxiv.org/abs/2309.02107