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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

This paper is devoted to establish sufficient conditions under which a transcendental meromorphic function has no unbounded Fatou components and to extend some results for entire functions to meromorphic functions. Actually, we shall mainly…

Complex Variables · Mathematics 2007-11-21 Zheng Jian-Hua , Piyapong Niamsup

We prove several results concerning the relative position of points in the postsingular set $P(f)$ of a meromorphic map $f$ and the boundary of a Baker domain or the successive iterates of a wandering component. For Baker domains we answer…

Dynamical Systems · Mathematics 2020-04-01 Krzysztof Barański , Núria Fagella , Xavier Jarque , Bogusława Karpińska

We first establish any continuum without interiors can be a limit set of iterations of an entire function on an oscillating wandering domain, and hence arise as a component of Julia sets. Recently, Luka Boc Thaler showed that every bounded…

Complex Variables · Mathematics 2023-09-11 Jiaxing Huang , Jian-Hua Zheng

We show that if a meromorphic function has a direct singularity over infinity, then the escaping set has an unbounded component and the intersection of the escaping set with the Julia set contains continua. This intersection has an…

Complex Variables · Mathematics 2008-09-28 Walter Bergweiler , Philip J. Rippon , Gwyneth M. Stallard

We describe conditions under which a multiply connected wandering domain of a transcendental meromorphic function with a finite number of poles must be a Baker wandering domain, and we discuss the possible eventual connectivity of Fatou…

Complex Variables · Mathematics 2014-02-26 P. J. Rippon , G. M. Stallard

This paper attempts to describe some of the results obtained in the iteration theory of transcendental meromorphic functions, not excluding the case of entire functions. The reader is not expected to be familiar with the iteration theory of…

Dynamical Systems · Mathematics 2018-01-08 Walter Bergweiler

In this paper, we prove that the ratio of the modulus of the iterates of two points in an escaping Fatou component may be bounded even if the orbit of the component contains an infinite modulus annulus sequence and this case cannot happen…

Complex Variables · Mathematics 2022-12-05 Jianhua Zheng , Chengfa Wu

Let $f$ and $g$ be commuting meromorphic functions with finitely many poles. By studying the behaviour of Fatou components under this commuting relation, we prove that $f$ and $g$ have the same Julia set whenever $f$ and $g$ have no simply…

Dynamical Systems · Mathematics 2022-11-24 Gustavo Rodrigues Ferreira

For a family of holomorphic functions on an arbitrary domain, we introduce Fatou and Julia like sets, and establish some of their interesting properties.

Complex Variables · Mathematics 2020-06-16 Kuldeep Singh Charak , Anil Singh , Manish Kumar

The Fatou-Julia theory for rational functions has been extended both to transcendental meromorphic functions and more recently to several different types of quasiregular mappings in higher dimensions. We extend the iterative theory to…

Dynamical Systems · Mathematics 2018-05-04 Luke Warren

Let $M$ be the class of all transcendental meromorphic functions $f: \mathbb{C} \to \mathbb{C} \bigcup\{\infty\}$ with at least two poles or one pole that is not an omitted value, and $M_o =\{f \in M:f{has at least one omitted value}\}$.…

Complex Variables · Mathematics 2012-11-09 Tarakanta Nayak , Jian-Hua Zheng

We show that for any transcendental meromorphic function $f$ there is a point $z$ in the Julia set of $f$ such that the iterates $f^n(z)$ escape, that is, tend to $\infty$, arbitrarily slowly. The proof uses new covering results for…

Dynamical Systems · Mathematics 2008-12-15 P. J. Rippon , G. M. Stallard

Let $f$ be a transcendental entire function and $U$ be a Fatou component of $f$. We show that if $U$ is an escaping wandering domain of $f$, then most boundary points of $U$ (in the sense of harmonic measure) are also escaping. In the other…

Complex Variables · Mathematics 2010-09-23 Philip J. Rippon , Gwyneth M. Stallard

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

This paper consists of tow parts. One is to study the existence of a point $a$ in the intersection of Julia set and escaping set such that $\arg z=\theta$ is a singular direction if $\theta$ is a limit point of $\{\arg f^n(a)\}$ under some…

Dynamical Systems · Mathematics 2019-12-30 Jianhua Zheng , Jie Ding

In this paper, we show that there exist transcendental meromorphic functions with a cycle of 2-periodic Fatou components, where one is simply connected while the other is doubly connected. In particular, the doubly connected Fatou component…

Complex Variables · Mathematics 2024-05-03 Jiaxing Huang , Chengfa Wu , Jian-Hua Zheng

We show that an invariant Fatou component of a hyperbolic transcendental entire function is a bounded Jordan domain (in fact, a quasidisc) if and only if it contains only finitely many critical points and no asymptotic curves. We use this…

Dynamical Systems · Mathematics 2016-02-11 Walter Bergweiler , Núria Fagella , Lasse Rempe-Gillen

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

This note initiates the study of the Fatou\,--\,Julia sets of a complex harmonic mapping. Along with some fundamental properties of the Fatou and the Julia sets, we observe some contrasting behaviour of these sets as those with in case of a…

Complex Variables · Mathematics 2025-03-04 Gopal Datt , Ramanpreet Kaur
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