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In recent years, there has been significant progress in the understanding of the dynamics of transcendental entire functions with bounded postsingular set. In particular, for certain classes of such functions, a complete description of…

Dynamical Systems · Mathematics 2022-06-14 Leticia Pardo-Simón

We use Bowen's definition of topological entropy and Ahlfors five islands theorem, as well as the theory of polynomial-like mappings, to show that the topological entropy of any entire transcendental function is infinity. In addition the…

Dynamical Systems · Mathematics 2020-11-05 Markus Wendt

We show that if the growth of a transcendental entire function f is sufficiently regular, then the Julia set and the escaping set of f have Hausdorff dimension 2.

Dynamical Systems · Mathematics 2010-06-22 Walter Bergweiler , Bogusława Karpińska

Let $f$ be a transcendental entire function. The escaping set $I(f)$ consists of those points that tend to infinity under iteration of $f$. We show that $I(f)$ is not $\sigma$-compact, resolving a question of Rippon from 2009.

Dynamical Systems · Mathematics 2022-09-15 Lasse Rempe

Let $f$ be a transcendental entire function and let $A(f)$ denote the set of points that escape to infinity `as fast as possible' under iteration. By writing $A(f)$ as a countable union of closed sets, called `levels' of $A(f)$, we obtain a…

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

In this paper, we prove that escaping set of transcendental semigroup is S-forward invariant. We also prove that if holomorphic semigroup is abelian, then Fatou set, Julia set and escaping set are S-completely invariant. We see certain…

Dynamical Systems · Mathematics 2018-03-28 Bishnu Hari Subedi , Ajaya Singh

We introduce the concept of escaping set for semigroups of transcendental entire functions using Fatou-Julia theory. Several results of the escaping set associated with the iteration of one transcendental entire function have been extended…

Dynamical Systems · Mathematics 2015-12-02 Dinesh Kumar , Sanjay Kumar

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

We mainly generalize the notion of abelian transcendental semigroup to nearly abelian transcendental semigroup. We prove that Fatou set, Julia set and escaping set of nearly abelian transcendental semigroup are completely invariant. We…

Dynamical Systems · Mathematics 2018-08-03 Bishnu Hari Subedi , Ajaya Singh

Given a rational map of the Riemann sphere and a subset $A$ of its Julia set, we study the $A$-exceptional set, that is, the set of points whose orbit does not accumulate at $A$. We prove that if the topological entropy of $A$ is less than…

Dynamical Systems · Mathematics 2016-03-23 Sara Campos , Katrin Gelfert

Let f be a transcendental entire function in the Eremenko-Lyubich class B. We give a lower bound for the Hausdorff dimension of the Julia set of f that depends on the growth of f. This estimate is best possible and is obtained by proving a…

Complex Variables · Mathematics 2010-01-25 Walter Bergweiler , Bogusława Karpińska , Gwyneth M. Stallard

It is known that, for many transcendental entire functions in the Eremenko-Lyubich class $\mathcal{B}$, every escaping point can eventually be connected to infinity by a curve of escaping points. When this is the case, we say that the…

Dynamical Systems · Mathematics 2021-08-18 Leticia Pardo-Simón

We consider the Hausdorff measure of Julia sets and escaping sets of exponential maps with respect to certain gauge functions. We give conditions on the growth of the gauge function which imply that the measure is zero or infinity,…

Dynamical Systems · Mathematics 2014-02-26 Joern Peter

We show, in an elementary way, that the Julia set of one-complex-variable entire functions is nonempty and perfect.

Complex Variables · Mathematics 2008-08-18 Claudio Meneghini

The escaping set of an entire function consists of the points in the complex plane that tend to infinity under iteration. This set plays a central role in the dynamics of transcendental entire functions. The goal of this survey is to…

Dynamical Systems · Mathematics 2025-12-16 Walter Bergweiler , Lasse Rempe

We show that the escaping sets and the Julia sets of bounded type transcendental entire functions of order $\rho$ become 'smaller' as $\rho\to\infty$. More precisely, their Hausdorff measures are infinite with respect to the gauge function…

Dynamical Systems · Mathematics 2011-02-25 Jörn Peter

Zorich maps are higher dimensional analogues of the complex exponential map. For the exponential family $\lambda e^z$, $\lambda>0$, it is known that for small values of $\lambda$ the Julia set is an uncountable collection of disjoint…

Dynamical Systems · Mathematics 2021-07-29 Athanasios Tsantaris

For a sequence $(\lambda_n)$ of positive real numbers we consider the exponential functions $f_{\lambda_n} (z) = \lambda_n e^z$ and the compositions $F_n = f_{\lambda_n} \circ f_{\lambda_{n-1}} \circ ... \circ f_{\lambda_1}$. For such a…

Dynamical Systems · Mathematics 2020-05-20 Krzysztof Lech

Given two permutable entire functions $f$ and $g,$ we establish vital relationship between escaping sets of entire functions $f, g$ and their composition. We provide some families of transcendental entire functions for which Eremenko's…

Dynamical Systems · Mathematics 2019-03-20 Ramanpreet Kaur , Dinesh Kumar

We show that for large classes of entire functions the Julia set and the escaping set have packing dimension two. For example, this is the case for entire functions which are bounded on a curve tending to infinity. More generally, we show…

Complex Variables · Mathematics 2013-02-12 Walter Bergweiler