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We study the dynamics of an arbitrary semigroup of transcendental entire functions using Fatou-Julia theory. Several results of the dynamics associated with iteration of a transcendental entire function have been extended to transcendental…

Dynamical Systems · Mathematics 2015-10-08 Dinesh Kumar , Sanjay Kumar

Let $f:\mathbb C\to \widehat{\mathbb C}=\mathbb C \cup\{\infty\}$ be a transcendental meromorphic function (possibly without any pole) with a single essential singularity, and that is chosen to be at $\infty$. The set of points…

Dynamical Systems · Mathematics 2026-04-10 Sukanta Das , Tarakanta Nayak

In this paper, we study the large scaled geometric structure of Julia sets of entire and meromorphic functions. Roughly speaking, the structure gives us some asymptotic information about the Julia set near the essential singularity. We will…

Dynamical Systems · Mathematics 2018-05-22 Jun Wang , Xiao Yao

We introduce meromorphic nearby cycle functors and study their functorial properties. Moreover we apply them to monodromies of meromorphic functions in various situations. Combinatorial descriptions of their reduced Hodge spectra and Jordan…

Algebraic Geometry · Mathematics 2022-04-20 Tat Thang Nguyen , Kiyoshi Takeuchi

Let $f$ be a rational map with an infinitely-connected fixed parabolic Fatou domain $U$. We prove that there exists a rational map $g$ with a completely invariant parabolic Fatou domain $V$, such that $(f,U)$ and $(g,V)$ are conformally…

Dynamical Systems · Mathematics 2025-09-15 Ning Gao , Yan Gao , Wenjuan Peng

In this article, we introduce the concept of normal families of bicomplex holomorphic functions to obtain a bicomplex Montel theorem. Moreover, we give a general definition of Fatou and Julia sets for bicomplex polynomials and we obtain a…

Complex Variables · Mathematics 2011-01-20 K. S. Charak , D. Rochon , N. Sharma

We study the class $\mathcal{M}$ of functions meromorphic outside a countable closed set of essential singularities. We show that if a function in $\mathcal{M}$, with at least one essential singularity, permutes with a non-constant rational…

Complex Variables · Mathematics 2016-10-03 J. W. Osborne , D. J. Sixsmith

A transcendental entire function f is called geometrically finite if the intersection of the set of singular values with the Fatou set is compact and the intersection of the postsingular set with the Julia set is finite. (In particular,…

Dynamical Systems · Mathematics 2010-11-02 Helena Mihaljevic-Brandt

We study the boundary behaviour of a meromorphic map $f: \mathbb C \to \widehat{\mathbb C}$ on its invariant simply connected Fatou component $U$. To this aim, we develop the theory of accesses to boundary points of $U$ and their relation…

Dynamical Systems · Mathematics 2016-12-15 Krzysztof Barański , Núria Fagella , Xavier Jarque , Bogusława Karpińska

We have introduced the notion of the bungee set and the filled Julia set of a transcendental semigroup using Fatou-Julia theory. Numerous results of the bungee set of a single transcendental entire function have been generalized to a…

Dynamical Systems · Mathematics 2025-10-13 Manisha Kumari , Dinesh Kumar

Classically, theorems of Fatou and Julia describe the boundary regularity of functions in one complex variable. The former says that a complex analytic function on the disk has non-tangential boundary values almost everywhere, and the…

Complex Variables · Mathematics 2021-08-20 J. E. Pascoe , Ryan Tully-Doyle

In this paper, on the basis of a specific question raised in [6], we further continue our investigations on the uniqueness of a meromorphic function with its higher derivatives sharing two sets and answer the question affirmatively.…

Complex Variables · Mathematics 2018-01-08 Abhijit Banerjee , Bikash Chakraborty

We construct automorphisms of $\mathbb{C}^2$ with a cycle of escaping Fatou components, on which there are exactly two limit functions, both of rank 1. On each such Fatou component, the limit sets for these limit functions are two disjoint…

Dynamical Systems · Mathematics 2023-08-11 Veronica Beltrami , Anna Miriam Benini , Alberto Saracco

We give several unequivalent notions of convergency of meromorphic functions and more generally meromorphic mappings (strong, weak, $\Gamma $-convergency and some others). Relations between them are investigated. A version of Rouche theorem…

Complex Variables · Mathematics 2016-09-07 Sergei Ivashkovich

Let f be a real entire function whose set S(f) of singular values is real and bounded. We show that, if f satisfies a certain function-theoretic condition (the "sector condition"), then $f$ has no wandering domains. Our result includes all…

Dynamical Systems · Mathematics 2014-12-10 Helena Mihaljević-Brandt , Lasse Rempe-Gillen

We construct polynomial automorphisms with wandering Fatou components. The four-dimensional automorphisms $H$ lie in a one-parameter family, depending on the parameter $\delta \in \mathbb C \setminus \{0\}$, and as $\delta \rightarrow 0$…

Dynamical Systems · Mathematics 2018-07-09 David Hahn , Han Peters

Let $f$ and $g$ be permutable transcendental entire functions. We use a recent analysis of the dynamical behaviour in multiply connected wandering domains to make progress on the long standing conjecture that the Julia sets of $f$ and $g$…

Dynamical Systems · Mathematics 2015-03-30 Anna Miriam Benini , Philip J. Rippon , Gwyneth M. Stallard

A completely stable multicurve of a post-critically finite rational map induces a combinatorial decomposition. The projections of the small Julia sets are immersed within the original Julia set. We prove that two small Julia sets are…

Dynamical Systems · Mathematics 2024-11-26 Guizhen Cui , Fei Yang , Luxian Yang

We prove that the meandering set for $f_a(z)=e^z+a$ is homeomorphic to the space of irrational numbers whenever $a$ belongs to the Fatou set of $f_a$. This extends recent results by Vasiliki Evdoridou and Lasse Rempe. It implies that the…

Dynamical Systems · Mathematics 2022-04-13 David S. Lipham

Structural stability of holomorphic functions has been the subject of much research in the last fifty years. Due to various technicalities, however, most of that work has focused on so-called finite-type functions (functions whose set of…

Dynamical Systems · Mathematics 2025-10-13 Gustavo R. Ferreira , Sebastian van Strien