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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

We say that a set is exhaustible if it admits algorithmic universal quantification for continuous predicates in finite time, and searchable if there is an algorithm that, given any continuous predicate, either selects an element for which…

Logic in Computer Science · Computer Science 2015-07-01 Martin Escardo

We construct a set of quaternionic metamonogenic functions (that is, in $\mbox{Ker}(D+\lambda)$ for diverse $\lambda$) in the unit disk, such that every metamonogenic function is approximable in the quaternionic Hilbert module $L^2$ of the…

Complex Variables · Mathematics 2024-10-08 J. Morais , R. Michael Porter

This paper is a continuation of authors work: Fatou and Julia like sets,Ukranian J. Math., to appear/arXiv:2006.08308[math.CV](see [4]). Here, we introduce escaping like set and generalized escaping like set for a family of holomorphic…

Complex Variables · Mathematics 2020-06-17 Kuldeep Singh Charak , Anil Singh , Manish Kumar

Using iterated Sacks forcing and topological games, we prove that the existence of a totally imperfect Menger set in the Cantor cube with cardinality continuum is independent from ZFC. We also analyze the structure of Hurewicz and consonant…

Logic · Mathematics 2025-10-28 Valentin Haberl , Piotr Szewczak , Lyubomyr Zdomskyy

We study the mixed-integer epigraph of a special class of convex functions with non-convex indicator constraints, which are often used to impose logical constraints on the support of the solutions. The class of functions we consider are…

Optimization and Control · Mathematics 2023-09-19 Shaoning Han , Andrés Gómez

We extend results about the dimension of the radial Julia set of certain exponential functions to quasiregular Zorich maps in higher dimensions. Our results improve on previous estimates of the dimension also in the special case of…

Dynamical Systems · Mathematics 2022-03-08 Walter Bergweiler , Jie Ding

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

We construct functions in the disc algebra with pointwise universal Fourier series on sets which are G-delta and dense and at the same time with Fourier series whose set of divergence is of Hausdorff dimension zero. We also see that some…

Classical Analysis and ODEs · Mathematics 2015-12-11 Christos Papachristodoulos , Michael Papadimitrakis

In this article we study for which Cantor sets there exists a gauge-function h, such that the h-Hausdorff-measure is positive and finite. We show that the collection of sets for which this is true is dense in the set of all compact subsets…

Classical Analysis and ODEs · Mathematics 2014-04-10 Carlos Cabrelli , Udayan Darji , Ursula Molter

Complex 1-variable polynomials with connected Julia sets and only repelling periodic points are called \emph{dendritic}. By results of Kiwi, any dendritic polynomial is semi-conjugate to a topological polynomial whose topological Julia set…

Dynamical Systems · Mathematics 2021-12-21 Alexander Blokh , Lex Oversteegen , Ross Ptacek , Vladlen Timorin

In this paper, we have investigated the Bungee set of composition of two transcendental entire functions. We have provided a class of permutable entire functions for which their Bungee sets are equal. Moreover, we have obtained a result on…

Dynamical Systems · Mathematics 2023-02-20 Dinesh Kumar , Ramanpreet Kaur

We establish a formula yielding the Hausdorff measure for a class of non-self-similar Cantor sets in terms of the canonical covers of the Cantor set.

Metric Geometry · Mathematics 2013-12-06 Steen Pedersen , Jason D. Phillips

We show that two cookie-cutter Cantor sets with the same symbolic coding are differentiably equivalent if and only if their Hausdorff dimensions are equal.

Dynamical Systems · Mathematics 2019-01-15 Daniel Ingebretson

We study polynomials with coefficients in a field L as dynamical systems where L is any algebraically closed and complete ultrametric field with dense valuation group and characteristic zero residual field. We give a complete description of…

Dynamical Systems · Mathematics 2007-05-23 Jan Kiwi

We give three families of parabolic rational maps and show that every Cantor set of circles as the Julia set of a non-hyperbolic rational map must be quasisymmetrically equivalent to the Julia set of one map in these families for suitable…

Dynamical Systems · Mathematics 2015-10-13 Weiyuan Qiu , Fei Yang , Yongcheng Yin

We prove that for meromorphic maps with logarithmic tracts (e.g. entire or meromorphic maps with a finite number of poles from class $\mathcal B$), the Julia set contains a compact invariant hyperbolic Cantor set of Hausdorff dimension…

Dynamical Systems · Mathematics 2011-05-26 Krzysztof Barański , Bogusława Karpińska , Anna Zdunik

We study infinite products of reproducing kernels with view to their use in dynamics (of iterated function systems), in harmonic analysis, and in stochastic processes. On the way, we construct a new family of representations of the Cuntz…

Functional Analysis · Mathematics 2013-01-22 D. Alpay , P. Jorgensen , I. Lewkowicz , I. Martziano

We prove that a nonempty, proper subset $S$ of the complex plane can be approximated in a strong sense by polynomial filled Julia sets if and only if $S$ is bounded and $\hat{\mathbb{C}} \setminus \textrm{int}(S)$ is connected. The proof…

Complex Variables · Mathematics 2017-09-28 Kathryn A. Lindsey , Malik Younsi

A hyperbolic transcendental entire function with connected Fatou set is said to be of disjoint type. It is known that the Julia set of a disjoint-type function of finite order is a Cantor bouquet; in particular, it is a collection of arcs…

Dynamical Systems · Mathematics 2025-09-19 Leticia Pardo-Simón , Lasse Rempe