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Let $(X,d)$ be a compact metric space, $f:X \mapsto X$ be a continuous map satisfying a property we call almost specification (which is slightly weaker than the $g$-almost product property of Pfister and Sullivan), and $\phi$ be a…

Dynamical Systems · Mathematics 2012-05-04 Daniel J. Thompson

In this paper, we will study the statistical behaviors of orbits. Firstly, we will show that for a dynamical systems have the shadowing property or almost specification property, the set of nonrecurrent points has full topological entropy.…

Dynamical Systems · Mathematics 2025-01-22 Yiwei Dong , Xiaobo Hou , Wanshan Lin , Xueting Tian

We study expansive dynamical systems from the viewpoint of general topology. We introduce the notions of orbit and refinement expansivity on topological spaces extending expansivity in the compact metric setting. Examples are given on…

General Topology · Mathematics 2015-09-17 Mauricio Achigar , Alfonso Artigue , Ignacio Monteverde

Let $(X,d,T )$ be a topological dynamical system with the specification property. We consider the non-dense orbit set $E(z_0)$ and show that for any non-transitive point $z_0\in X$, this set $E(z_0)$ is empty or carries full topological…

Dynamical Systems · Mathematics 2024-10-10 Cao Zhao , Jiao Yang , Xiaoyao Zhou

In this paper we introduce the notion of dynamical systems over the class of the normed real nonassociative algebras not necessarily finite-dimensional, generalize the classical filled Julia and Mandelbrot sets over the complex numbers,…

Dynamical Systems · Mathematics 2020-09-22 João Carlos da Motta Ferreira , Maria das Graças Bruno Marietto

In this paper we study the dimension of a family of sets arising in open dynamics. We use exponential mixing results for diagonalizable flows in compact homogeneous spaces $X$ to show that the Hausdorff dimension of set of points that lie…

Dynamical Systems · Mathematics 2014-11-05 Shirali Kadyrov

We consider the case of an exponential map for which the singular value is accessible from the set of escaping points. We show that there are dynamic rays of which do not land. In particular, there is no analog of Douady's ``pinched disk…

Dynamical Systems · Mathematics 2007-10-28 Lasse Rempe

This note concerns non-autonomous dynamics of rational functions and, more precisely, the fractal behavior of the Julia sets under perturbation of non-autonomous systems. We provide a necessary and sufficient condition for holomorphic…

Dynamical Systems · Mathematics 2012-02-15 Volker Mayer , Bartlomiej Skorulski , Mariusz Urbanski

We present a dichotomy for surface homeomorphisms in the isotopy class of the identity. We show that, in the absence of a degenerate fixed point set, either there exists a uniform bound on the diameter of orbits of non-wandering points for…

Dynamical Systems · Mathematics 2022-01-19 Xiao-Chuan Liu , Fabio Armando Tal

We develop an abstract model for the dynamics of an exponential map $z\mapsto \exp(z)+\kappa$ on its set of escaping points and, as an analog of Boettcher's theorem for polynomials, show that every exponential map is conjugate, on a…

Dynamical Systems · Mathematics 2007-10-28 Lasse Rempe

This paper deals with both complex dynamical systems and conformal iterated function systems. We study finitely generated expanding semigroups of rational maps with overlaps on the Riemann sphere. We show that if a $d$-parameter family of…

Dynamical Systems · Mathematics 2015-03-19 Hiroki Sumi , Mariusz Urbanski

We study dynamical systems with the property that all the nontrivial factors have infinite topological entropy (or, positive mean dimension). We establish an ``if and only if'' condition for this property among a typical class of dynamical…

Dynamical Systems · Mathematics 2025-04-16 Lei Jin , Yixiao Qiao

In this paper, we give a new proof for the Hausdorff dimension of the non-dense orbit set for expanding maps. This proof is based on the sharp lower bound of the Hausdorff dimension of repellers given by Cao, Pesin and Zhao…

Dynamical Systems · Mathematics 2023-06-27 Congcong Qu

In this paper we study two classes of meromorphic functions previously studied by Mayer, Kotus, and Urba\'nski. In particular we estimate a lower bound for the Julia set and the set of escaping points for non-autonomous additive and affine…

Dynamical Systems · Mathematics 2019-01-01 Jason Atnip

We study topological properties of the escaping endpoints and fast escaping endpoints of the Julia set of complex exponential $\exp(z)+a$ when $a\in (-\infty,-1)$. We show neither space is homeomorphic to the whole set of endpoints. This…

Dynamical Systems · Mathematics 2022-04-13 David Sumner Lipham

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

We give a characterization of extremal sets in Hilbert spaces that generalizes a classical theorem of H. W. E. Jung. We investigate also the behaviour of points near to the circumsphere of such a set with respect to the Kuratowski and…

Metric Geometry · Mathematics 2007-05-23 V. NguyenKhac , K. NguyenVan

We study geometric and statistical properties of complex rational maps satisfying the Topological Collet-Eckmann Condition. We show that every such a rational map possesses a unique conformal probability measure of minimal exponent, and…

Dynamical Systems · Mathematics 2007-05-23 Feliks Przytycki , Juan Rivera-Letelier

Let $\beta_1,\beta_2>1$ and $T_i(x,y) = \bigl(\frac{x+i}{\beta_1}, \frac{y+i}{\beta_2}\bigr),\ i\in\{\pm1\}$. Let $A := A_{\beta_1, \beta_2}$ be the unique compact set satisfying $A = T_{1}(A) \cup T_{-1}(A)$. In this paper we give a…

Dynamical Systems · Mathematics 2017-01-13 Kevin G. Hare , Nikita Sidorov

We prove that there exists a scrambled set for the Gauss map with full Hausdorff dimension. Meanwhile, we also investigate the topological properties of the sets of points with dense or non-dense orbits.

Dynamical Systems · Mathematics 2016-09-01 Weibin Liu , Bing Li