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Related papers: Unicritical Laminations

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Quadratic laminations of the unit disk were introduced by Thurston as a vehicle for understanding the (connected) Julia sets of quadratic polynomials and the parameter space of quadratic polynomials. The "Central Strip Lemma" plays a key…

Dynamical Systems · Mathematics 2015-01-27 David J. Cosper , Jeffrey K. Houghton , John C. Mayer , Luka Mernik , Joseph W. Olson

To investigate the degree $d$ connectedness locus, Thur\-ston studied \emph{$\sigma_d$-invariant laminations}, where $\sigma_d$ is the $d$-tupling map on the unit circle, and built a topological model for the space of quadratic polynomials…

Dynamical Systems · Mathematics 2022-01-28 Alexander Blokh , Lex Oversteegen , Nikita Selinger , Vladlen Timorin , Sandeep Chowdary Vejandla

Thurston parameterized quadratic invariant laminations with a non-invariant lamination, the quotient of which yields a combinatorial model for the Mandelbrot set. As a step toward generalizing this construction to cubic polynomials, we…

Dynamical Systems · Mathematics 2022-01-28 Alexander Blokh , Lex Oversteegen , Ross Ptacek , Vladlen Timorin

Thurston introduced $\si_d$-invariant laminations (where $\si_d(z)$ coincides with $z^d:\ucirc\to \ucirc$, $d\ge 2$) and defined \emph{wandering $k$-gons} as sets $\T\subset \ucirc$ such that $\si_d^n(\T)$ consists of $k\ge 3$ distinct…

Dynamical Systems · Mathematics 2016-01-18 A. Blokh , C. Curry , L. Oversteegen

Thurston introduced $\si_d$-invariant laminations (where $\si_d(z)$ coincides with $z^d:\ucirc\to \ucirc$, $d\ge 2$). He defined \emph{wandering $k$-gons} as sets $\T\subset \ucirc$ such that $\si_d^n(\T)$ consists of $k\ge 3$ distinct…

Dynamical Systems · Mathematics 2016-01-18 Alexander Blokh , Clinton Curry , Lex Oversteegen

We study the correspondence between unicritical laminations and maximally critical laminations with rotational and identity return polygons. Laminations are a combinatorial and topological way to study Julia sets. Laminations give…

Dynamical Systems · Mathematics 2023-08-01 Brittany Burdette , Caleb Falcione , Cameron Hale , John Mayer

Thurston defined invariant laminations, i.e. collections of chords of the unit circle $S^1$ (called \emph{leaves}) that are pairwise disjoint inside the open unit disk and satisfy a few dynamical properties. To be directly associated to a…

Dynamical Systems · Mathematics 2016-01-18 Alexander M. Blokh , Debra Mimbs , Lex G. Oversteegen , Kirsten I. S. Valkenburg

To investigate the degree $d$ connectedness locus, Thurston studied \emph{$\sigma_d$-invariant laminations}, where $\sigma_d$ is the $d$-tupling map on the unit circle, and built a topological model for the space of quadratic polynomials…

In this paper, we introduce a Collet-Eckmann type condition for the unicritical laminations on the unit circle. We prove that this condition implies the lamination admits a H\"older continuous conformal welding which produces a Julia set…

Dynamical Systems · Mathematics 2025-05-07 Linhang Huang

Laminations are a combinatorial and topological way to study Julia sets. Laminations give information about the structure of parameter space of degree $d$ polynomials with connected Julia sets. We first study fixed point portraits in…

Dynamical Systems · Mathematics 2023-08-01 Md Abdul Aziz , Brittany Burdette , John Mayer

In the early 1980's Thurston gave a topological characterization of rational maps whose critical points have finite iterated orbits (\cite{Th,DH1}): given a topological branched covering $F$ of the two sphere with finite critical orbits, if…

Dynamical Systems · Mathematics 2014-07-15 Cui Guizhen , Tan Lei

The combinatorial Mandelbrot set is a continuum in the plane, whose boundary can be defined, up to a homeomorphism, as the quotient space of the unit circle by an explicit equivalence relation. This equivalence relation was described by…

Dynamical Systems · Mathematics 2022-01-28 Alexander Blokh , Lex Oversteegen , Vladlen Timorin

This paper studies the space of degree $d>1$ invariant q-laminations, i.e., geodesic laminations invariant under the $d$-tupling map of the circle and associated with equivalence relations. Our main construction associates a q-lamination…

Dynamical Systems · Mathematics 2026-04-28 Alexander Blokh , Lex Oversteegen , Vladlen Timorin

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

Degree-$d$-invariant laminations of the disk model the dynamical action of a degree-$d$ polynomial; such a lamination defines an equivalence relation on $S^1$ that corresponds to dynamical rays of an associated polynomial landing at the…

Given any rational map $f$, there is a lamination by Riemann surfaces associated to $f$. Such laminations were constructed in general by Lyubich and Minsky. In this paper, we classify laminations associated to quadratic polynomials with…

Dynamical Systems · Mathematics 2007-05-23 Carlos Cabrera

Every expanding Thurston map $f$ without periodic critical points is known to have an iterate $f^n$ which is the topological mating of two polynomials. This has been examined by Kameyama and Meyer; the latter who has offered an explicit…

Dynamical Systems · Mathematics 2023-04-04 Mary Wilkerson

We suggest a way to associate to a rational map of the Riemann sphere a three dimensional object called a hyperbolic orbifold 3-lamination. The relation of this object to the map is analogous to the relation of a hyperbolic 3-manifold to a…

Dynamical Systems · Mathematics 2016-09-06 Mikhail Lyubich , Yair Minsky

The behavior under iteration of the critical points of polynomial maps plays an essential role in understanding its dynamics. We study the special case where the forward orbits of the critical points are finite. Thurston's theorem tells us…

Dynamical Systems · Mathematics 2014-08-12 Benjamin Hutz , Adam Towsley

In 1980s, Thurston established a topological characterization theorem for postcritically finite rational maps. In this paper, a decomposition theorem for a class of postcritically infinite branched covering termed `Herman map' is developed.…

Dynamical Systems · Mathematics 2012-03-27 Xiaoguang Wang
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