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Related papers: Julia sets of complex H\'enon maps

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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

For a family of holomorphic functions on an arbitrary domain, we introduce Fatou and Julia like sets, and establish some of their interesting properties.

Complex Variables · Mathematics 2020-06-16 Kuldeep Singh Charak , Anil Singh , Manish Kumar

We establish Bowen's formula for the Julia set of a non-elementary, expanding, irreducible and aperiodic rational graph-directed Markov system satisfying the backward separating condition. Towards this end, we shall prove that the…

Dynamical Systems · Mathematics 2024-03-28 Tadashi Arimitsu , Johannes Jaerisch , Hiroki Sumi , Takayuki Watanabe

We study skew-product dynamics for a large class of finitely-generated semi--hyperbolic semigroups of rational maps acting on the Riemann sphere, which generalizes both the theory of iteration of a single rational map of a single complex…

Dynamical Systems · Mathematics 2022-09-27 Jason Atnip , Hiroki Sumi , Mariusz Urbański

Suppose $X$ is a compact connected metric space and $f: X \to X$ is a metric coarse expanding conformal map in the sense of Ha\"issinsky-Pilgrim. We show that if $X$ contains a homeomorphic copy of the letter "Y", then the Hausdorff…

Metric Geometry · Mathematics 2022-09-22 Insung Park , Angela Wu

We prove that if $\xi$ is a quasisymmetric homeomorphism between Sierpi\'nski carpets that are the Julia sets of postcritically-finite rational maps, then $\xi$ is the restriction of a M\"obius transformation to the Julia set. This implies…

Dynamical Systems · Mathematics 2014-03-04 Mario Bonk , Misha Lyubich , Sergei Merenkov

It has been previously shown by two of the authors that some polynomial Julia sets are algorithmically impossible to draw with arbitrary magnification. On the other hand, for a large class of examples the problem of drawing a picture has…

Dynamical Systems · Mathematics 2009-11-11 I. Binder , M. Braverman , M. Yampolsky

This article concerns a new geometric characterization of the Julia set. By using Ahlfors-Shimizu's characteristic, we establish some growth results which indicates the characterization of the Julia set. The main technique is to estimate…

Dynamical Systems · Mathematics 2015-12-17 Xiao Yao , Daochun Sun , Zuxing Xuan

In this paper we investigate the perturbation properties of rational Misiurewicz maps, when the Julia set is the whole sphere (the other case is treated in [1]). In particular, we show that if f is a Misiurewicz map and not a flexible…

Dynamical Systems · Mathematics 2009-06-23 Magnus Aspenberg

We investigate under which dynamical conditions the Julia set of a quadratic rational map is a Sierpi\'{n}ski curve

Dynamical Systems · Mathematics 2013-05-31 R. L. Devaney , N. Fagella , A. Garijo , X. Jarque

For any polynomial map with a single critical point, we prove that its lower Lyapunov exponent at the critical value is negative if and only if the map has an attracting cycle. Similar statement holds for the exponential maps and some other…

Dynamical Systems · Mathematics 2015-12-15 Genadi Levin , Feliks Przytycki , Weixiao Shen

In this paper we give a new prove of hyperbolicity of renormalization of critical circle maps using the formalism of almost-commuting pairs. We extend renormalization to two-dimensional dissipative maps of the annulus which are small…

Dynamical Systems · Mathematics 2019-11-13 Denis Gaidashev , Michael Yampolsky

We study numerically the $\alpha$- and $\omega$-limits of the Newton maps of two of the most elementary families of polynomial transformations on the plane: those with a linear component and those with both components of degree two. Our…

Dynamical Systems · Mathematics 2019-02-19 Roberto De Leo

Hereditarily non uniformly perfect (HNUP) sets were introduced by Stankewitz, Sugawa, and Sumi in \cite{SSS} who gave several examples of such sets based on Cantor set-like constructions using nested intervals. For non-autonomous iteration…

Dynamical Systems · Mathematics 2025-07-18 Mark Comerford , Hiroki Sumi

The first half of this mostly expository note reviews some notions of joint spectrum of linear operators, and it gives a new characterization of amenable groups in terms of projective spectrum. The second half revisits an application of…

Functional Analysis · Mathematics 2023-06-16 Rongwei Yang

We show that there exists a hyperbolic entire function of finite order of growth such that the hyperbolic dimension---that is, the Hausdorff dimension of the set of points in the Julia set of whose orbit is bounded---is equal to two. This…

Complex Variables · Mathematics 2014-11-14 Lasse Rempe-Gillen

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

We describe a rigorous computer algorithm for attempting to construct an explicit, discretized metric for which a complex polynomial map is expansive on a given neighborhood of its Julia set. We show construction of such a metric proves the…

Dynamical Systems · Mathematics 2023-08-14 Suzanne Lynch Hruska

In this paper we introduce the notion of parabolic-like mapping, which is an object similar to a polynomial-like mapping, but with a parabolic external class, i.e. an external map with a parabolic fixed point. We prove a straightening…

Dynamical Systems · Mathematics 2013-08-05 Luciana Luna Anna Lomonaco

We use hyperbolicity of golden-mean renormalization of dissipative H\'enon-like maps to prove that the boundaries of Siegel disks of sufficiently dissipative quadratic complex H\'enon maps with golden-mean rotation number are topological…

Dynamical Systems · Mathematics 2019-12-24 Denis Gaidashev , Remus Radu , Michael Yampolsky