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Let {f_t} be any algebraic family of rational maps of a fixed degree, with a marked critical point c(t). We first prove that the hypersurfaces of parameters for which c(t) is periodic converge as a sequence of positive closed (1,1) currents…

Dynamical Systems · Mathematics 2007-08-30 Romain Dujardin , Charles Favre

In this paper we give a combinatorial description of the renormlization limits of infinitely renormalizable unimodal maps with {\it essentially bounded} combinatorics admitting quadratic-like complex extensions. As an application we…

Dynamical Systems · Mathematics 2016-09-07 Benjamin Hinkle

Inou and Shishikura provided a class of maps that is invariant by near-parabolic renormalization, and that has proved extremely useful in the study of the dynamics of quadratic polynomials. We provide here another construction, using more…

Dynamical Systems · Mathematics 2020-04-14 Arnaud Chéritat

We prove combinatorial rigidity of infinitely renormalizable unicritical polynomials, P_c :z \mapsto z^d+c, with complex c, under the a priori bounds and a certain "combinatorial condition". This implies the local connectivity of the…

Dynamical Systems · Mathematics 2022-02-09 Davoud Cheraghi

It is well known that the dynamical behavior of a rational map $f:\widehat{\mathbb C}\to \widehat{\mathbb C}$ is governed by the forward orbits of the critical points of $f$. The map $f$ is said to be postcritically finite if every critical…

Dynamical Systems · Mathematics 2022-04-25 William Floyd , Daniel Kim , Sarah Koch , Walter Parry , Edgar Saenz

In this paper we present an equivalent statement to the Jacobian conjecture. For a polynomial map F on an affine space of dimension n, we define recursively n finite sequences of polynomials. We give an equivalent condition to the…

Commutative Algebra · Mathematics 2016-01-05 Elzbieta Adamus , Pawel Bogdan , Teresa Crespo , Zbigniew Hajto

We show that the set of complex points in the moduli space of polynomials of degree d corresponding to post-critically finite polynomials is a set of algebraic points of bounded height. It follows that for any B, the set of conjugacy…

Number Theory · Mathematics 2011-02-15 Patrick Ingram

A rational function of degree at least two with coefficients in an algebraically closed field is post-critically finite (PCF) if all of its critical points have finite forward orbit under iteration. We show that the collection of PCF…

Number Theory · Mathematics 2015-01-14 Robert L. Benedetto , Patrick Ingram , Rafe Jones , Alon Levy

In this paper we give a unified proof of the fact that the Julia set of Newton's method applied to a holomorphic function of the complex plane (a polynomial of degree large than $1$ or an entire transcendental function) is connected. The…

Dynamical Systems · Mathematics 2015-01-23 Krzysztof Barański , Núria Fagella , Xavier Jarque , Bogusława Karpińska

We give a simple combinatorial criterion, in terms of an action on a hyperbolic simplicial complex, for a group to be hierarchically hyperbolic. We apply this to show that quotients of mapping class groups by large powers of Dehn twists are…

Group Theory · Mathematics 2024-06-25 Jason Behrstock , Mark Hagen , Alexandre Martin , Alessandro Sisto

The second author proved that the set of post-critically finite polynomials of given degree is a set of bounded height, up to change of variables. Motivated by an observation about unicritical polynomials, we complement this by proving that…

Number Theory · Mathematics 2022-10-27 Benjamin Fraser , Patrick Ingram

We consider combinatorial maps with fixed combinatorial knot numbered with augmenting numeration called normalized knot. We show that knot's normalization doesn't affect combinatorial map what concerns its generality. Knot's normalization…

Combinatorics · Mathematics 2010-10-14 Dainis Zeps

In this paper, we introduce cosine Thurston maps. In particular, we construct postsingularly finite topological cosine maps and focus on such maps with strictly preperiodic critical points. We use the techniques of Hubbard, Schleicher, and…

Dynamical Systems · Mathematics 2025-04-03 Schinella D'Souza

Let f be a transcendental map, and let U be an attracting or parabolic basin, or a doubly parabolic Baker domain. Assume U is simply connected. Then, we prove that periodic points are dense in the boundary of U, under certain hypothesis on…

Dynamical Systems · Mathematics 2024-04-18 Anna Jové

Noguchi proved that the set of dominant maps from a fixed variety to a fixed hyperbolic variety is finite. We extend this result to the setting of orbifold pairs, as introduced by Campana, under suitable assumptions. Certain compactness…

Algebraic Geometry · Mathematics 2024-10-23 Laurine Weibel

We extend Thurston's combinatorial criterion for postcritically finite rational maps to a class of rational maps with bounded type Siegel disks. The combinatorial characterization of this class of Siegel rational maps plays a special role…

Dynamical Systems · Mathematics 2008-11-20 Gaofei Zhang

A Thurston map is a branched covering map $f\colon S^2\to S^2$ that is postcritically finite. Mating of polynomials, introduced by Douady and Hubbard, is a method to geometrically combine the Julia sets of two polynomials (and their…

Complex Variables · Mathematics 2012-10-23 Daniel Meyer

We give a simple algorithm that determines whether a given post-critically finite topological polynomial is Thurston equivalent to a polynomial. If it is, the algorithm produces the Hubbard tree; otherwise, the algorithm produces the…

Dynamical Systems · Mathematics 2021-11-25 James Belk , Justin Lanier , Dan Margalit , Rebecca R. Winarski

Pilgrim's Finite Global Attractor Conjecture has been verified for polynomials [1], but remains open for general rational maps. In this paper, we prove the conjecture for a family of rational maps obtained by gluing two PCF polynomials…

Dynamical Systems · Mathematics 2026-05-04 Panjing Wu

We introduce a class of infinitely renormalizable, unicritical diffeomorphisms of the disk (with a non-degenerate "critical point"). In this class of dynamical systems, we show that under renormalization, maps eventually become…

Dynamical Systems · Mathematics 2024-01-25 Sylvain Crovisier , Mikhail Lyubich , Enrique Pujals , Jonguk Yang