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JOURNALS // Moscow Mathematical Journal // Archive

Mosc. Math. J., 2023 Volume 23, Number 4, Pages 441–461 (Mi mmj861)

Immediate renormalization of cubic complex polynomials with empty rational lamination

Alexander Blokha, Lex Oversteegena, Vladlen Timorinbc

a Department of Mathematics, University of Alabama at Birmingham, Birmingham, AL 35294-1170
b Faculty of Mathematics, HSE University, 6 Usacheva St., 119048 Moscow, Russia
c Independent University of Moscow, Bolshoy Vlasyevskiy Per. 11, 119002 Moscow, Russia

Abstract: A cubic polynomial $P$ with a non-repelling fixed point $b$ is said to be immediately renormalizable if there exists a (connected) QL invariant filled Julia set $K^*$ such that $b\in K^*$. In that case, exactly one critical point of $P$ does not belong to $K^*$. We show that if, in addition, the Julia set of $P$ has no (pre)periodic cutpoints, then this critical point is recurrent.

Key words and phrases: complex dynamics, julia set, mandelbrot set.

MSC: Primary 37F20; Secondary 37C25, 37F10, 37F50

Language: English



© Steklov Math. Inst. of RAS, 2024