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The Fatou-Julia iteration theory of rational and transcendental entire functions has recently been extended to quasiregular maps in more than two real dimensions. Our goal in this paper is similar; we extend the iteration theory of analytic…

Dynamical Systems · Mathematics 2019-04-12 Daniel A. Nicks , David J. Sixsmith

The Endpoint Theorem links the existence of a sequence (curve), without accumulation points, in a manifold to the existence of an open embedding of that manifold so that the image of the given sequence (curve) has a unique endpoint. It…

General Relativity and Quantum Cosmology · Physics 2021-03-31 Susan M Scott , Ben E Whale

We study the iteration of functions in the exponential family. We construct a number of sets, consisting of points which escape to infinity `slowly', and which have Hausdorff dimension equal to 1. We prove these results by using the idea of…

Dynamical Systems · Mathematics 2019-02-20 D. J. Sixsmith

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

We develop techniques that lay out a basis for generalizations of the famous Thurston's Topological Characterization of Rational Functions for an infinite set of marked points and branched coverings of infinite degree. Analogously to the…

Dynamical Systems · Mathematics 2023-02-02 Konstantin Bogdanov

We show that an exponential map $f_c(z)=e^z+c$ whose singular value $c$ is combinatorially non-recurrent and non-escaping is uniquely determined by its combinatorics, i.e. the pattern in which its dynamic rays land together. We do this by…

Dynamical Systems · Mathematics 2014-08-08 Anna Miriam Benini

We study the distribution of periodic points for a wide class of maps, namely entire transcendental functions of finite order and with bounded set of singular values, or compositions thereof. Fix $p\in\N$ and assume that all dynamic rays…

Dynamical Systems · Mathematics 2014-12-08 Anna Miriam Benini , Nuria Fagella

We classify transcendental entire functions that are compositions of a polynomial and the exponential for which all singular values escape on disjoint rays. The construction involves an iteration procedure on an infinite-dimensional…

Dynamical Systems · Mathematics 2025-07-29 Konstantin Bogdanov

Guided by classical concepts, we define the notion of \emph{ends} of an iterated function system and prove that the number of ends is an upper bound for the number of nondegenerate components of its attractor. The remaining isolated points…

Dynamical Systems · Mathematics 2014-03-07 Gregory R. Conner , Wolfram Hojka

We show that a continuous map or a continuous flow on $\R^{n}$ with a certain recurrence relation must have a fixed point. Specifically, if there is a compact set W with the property that the forward orbit of every point in $\R^{n}$…

Dynamical Systems · Mathematics 2007-05-23 David Richeson , Jim Wiseman

We determine the exact Borel class of the points whose iterates under $\exp(z)+a$ tend to infinity. We also prove that the sets of non-escaping Julia points for many of these functions are topologically equivalent.

General Topology · Mathematics 2024-04-02 David S. Lipham

We prove that every wandering exposed Julia component of a rational map is to a singleton, provided that each wandering Julia component containing critical points is non-recurrent. Moreover, we show that the Julia set contains only finitely…

Dynamical Systems · Mathematics 2025-09-09 Yan Gao , Lele Xu , Luxian Yang

We develop a general technique for realising full closed subsets of the complex plane as wandering sets of entire functions. Using this construction, we solve a number of open problems. (1) We construct a counterexample to Eremenko's…

Dynamical Systems · Mathematics 2025-09-19 David Martí-Pete , Lasse Rempe , James Waterman

We study the dynamics of a collection of families of transcendental entire functions which generalises the well-known exponential and cosine families. We show that for functions in many of these families the Julia set, the escaping set and…

Dynamical Systems · Mathematics 2016-01-26 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 analyze a real one-parameter family of quasiconformal deformations of a hyperbolic rational map known as {\em spinning}. We show that under fairly general hypotheses, the limit of spinning either exists and is unique, or else converges…

Dynamical Systems · Mathematics 2016-09-07 Kevin M. Pilgrim , Tan Lei

In transcendental dynamics significant progress has been made by studying points whose iterates escape to infinity at least as fast as iterates of the maximum modulus. Here we take the novel approach of studying points whose iterates escape…

Complex Variables · Mathematics 2016-09-22 J. W. Osborne , P. J. Rippon , G. M. Stallard

For a rational function $R$, let $N_R(z)=z-\frac{R(z)}{R'(z)}.$ Any such $N_R$ is referred to as a Newton map. We determine all the rational functions $R$ for which $N_R$ has exactly two attracting fixed points, one of which is an…

Dynamical Systems · Mathematics 2026-02-05 Tarakanta Nayak , Soumen Pal , Pooja Phogat

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

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