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We study the geometry of simply connected wandering domains for entire functions and we prove that every bounded connected regular open set, whose closure has a connected complement, is a wandering domain of some entire function. In…

Complex Variables · Mathematics 2021-04-23 Luka Boc Thaler

It is established that if a harmonic function $u$ on the unit disk $\mathbb D$ in $\mathbb C$ has angular limits on a measurable set $E$ of the unit circle $\partial\mathbb D$, then its conjugate harmonic function $v$ in $\mathbb D$ also…

Complex Variables · Mathematics 2018-03-06 Vladimir Ryazanov

For a transcendental entire function f, we study the set of points BU(f) whose iterates under f neither escape to infinity nor are bounded. We give new results on the connectedness properties of this set and show that, if U is a Fatou…

Dynamical Systems · Mathematics 2016-10-03 J. W. Osborne , D. J. Sixsmith

For a transcendental entire function, a partial affirmative answer to Baker's question on the boundedness of its Fatou components is given. In addition, we have addressed Wang's question on Fej\'er gaps. Certain results about functions with…

Complex Variables · Mathematics 2022-12-09 Ramanpreet Kaur

We analyze the boundaries of multiply connected Fatou components of transcendental maps by means of universal covering maps and associated inner functions. A unified approach is presented, which includes invariant Fatou components (of any…

Dynamical Systems · Mathematics 2025-10-13 Gustavo R. Ferreira , Anna Jové

Iteration of the function $f_\lambda(z)=\lambda + z+\tan z, z \in \mathbb{C}$ is investigated in this article. It is proved that for every $\lambda$, the Fatou set of $f_\lambda$ has a completely invariant Baker domain $B$; we call it the…

Dynamical Systems · Mathematics 2022-07-29 Subhasis Ghora , Tarakanta Nayak

We prove that for typical rotation numbers polynomial Siegel disks are Jordan domains with boundaries containing at least one critical point.

Dynamical Systems · Mathematics 2014-11-18 Gaofei Zhang

A Baker omitted value, in short \textit{bov} of a transcendental meromorphic function $f$ is an omitted value such that there is a disk $D$ centered at the bov for which each component of the boundary of $f^{-1}(D)$ is bounded. Assuming all…

Dynamical Systems · Mathematics 2021-01-07 Subhasis Ghora , Tarakanta Nayak

We study invariant Fatou components for holomorphic endomorphisms in $\mathbb{P}^2$. In the recurrent case these components were classified by Sibony and the second author in 1995. In 2008 Ueda completed this classification by proving that…

Dynamical Systems · Mathematics 2013-08-16 Luka Boc-Thaler , Han Peters , John-Erik Fornaess

Let $f$ be a transcendental entire function and let $I(f)$ denote the set of points that escape to infinity under iteration. We give conditions which ensure that, for certain functions, $I(f)$ is connected. In particular, we show that…

Complex Variables · Mathematics 2008-01-24 P. J. Rippon , G. M. Stallard

We show that if a meromorphic function has two completely invariant Fatou components and only finitely many critical and asymptotic values, then its Julia set is a Jordan curve. However, even if both domains are attracting basins, the Julia…

Complex Variables · Mathematics 2009-09-29 Walter Bergweiler , Alexandre Eremenko

We prove local connectivity of the boundaries of invariant simply connected attracting basins for a class of transcendental meromorphic maps. The maps within this class need not be geometrically finite or in class $\mathcal B$, and the…

Dynamical Systems · Mathematics 2024-06-14 Krzystof Barański , Núria Fagella , Xavier Jarque , Bogusława Karpińska

We prove relative Fatou's theorem for nonnegative harmonic functions with respect to a large class of killed subordinate Brownian motions with Gaussian components in bounded $C^{1,1}$ open sets in $\mathbb{R}^{d}$, $d\geq 2$, which asserts…

Probability · Mathematics 2015-05-01 Yunju Lee , Hyunchul Park

We consider rational surface automorphisms with positive entropy. A Fatou component is said to be a rotation domain if the automorphism induces a torus action on it. Here we construct a rational surface automorphism with positive entropy…

Dynamical Systems · Mathematics 2009-07-21 Eric Bedford , Kyounghee Kim

We realize a dynamical decomposition for a post-critically finite rational map which admits a combinatorial decomposition. We split the Riemann sphere into two completely invariant subsets. One is a subset of the Julia set consisting of…

Dynamical Systems · Mathematics 2015-07-17 Guizhen Cui , Wenjuan Peng , Lei Tan

We prove a version of the Fatou theorem for bounded functions with bounded d_J-bar diferential on wedge-type domains in an almost complex manifold.

Complex Variables · Mathematics 2022-02-08 Alexandre Sukhov

We study the family of singular perturbations of Blaschke products $B_{a,\lambda}(z)=z^3\frac{z-a}{1-\overline{a}z}+\frac{\lambda}{z^2}$. We analyse how the connectivity of the Fatou components varies as we move continuously the parameter…

Dynamical Systems · Mathematics 2017-04-04 Jordi Canela

Let $f$ be Fatou's function, that is, $f(z)= z+1+e^{-z}$. We prove that the escaping set of $f$ has the structure of a `spider's web' and we show that this result implies that the non-escaping endpoints of the Julia set of $f$ together with…

Dynamical Systems · Mathematics 2015-10-27 Vasiliki Evdoridou

We study the behaviour of a transcendental entire map $ f\colon \mathbb{C}\to\mathbb{C} $ on an unbounded invariant Fatou component $ U $, assuming that infinity is accessible from $ U $. It is well-known that $ U $ is simply connected.…

Dynamical Systems · Mathematics 2024-06-17 Anna Jové , Núria Fagella

We find the Martin boundary for the Young-Fibonacci lattice YF. Along with the lattice of Young diagrams, this is the most interesting example of a differential poset. The Martin boundary construction provides an explicit Poisson-type…

Combinatorics · Mathematics 2007-05-23 Frederick M. Goodman , Sergei V. Kerov