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We describe a primary limb structure in the connectedness locus of complex cubic polynomials, where the limbs are indexed by the periodic points of the doubling map $t \mapsto 2t \ (\operatorname{mod} {\mathbb Z})$. The main renormalization…

Dynamical Systems · Mathematics 2025-09-18 Carsten Lunde Petersen , Saeed Zakeri

We describe relations between hyperbolic geometry and codimension two knots or, more exactly, between varieties of conjugacy classes of discrete faithful representations of the fundamental groups of hyperbolic n-manifolds M into…

Geometric Topology · Mathematics 2007-05-23 Boris Apanasov

The paper deals with cubic 1-variable polynomials whose Julia sets are connected. Fixing a bounded type rotation number, we obtain a slice of such polynomials with the origin being a fixed Siegel point of the specified rotation number. Such…

Dynamical Systems · Mathematics 2021-12-22 Alexander Blokh , Lex Oversteegen , Anastasia Shepelevtseva , Vladlen Timorin

The space of monic centered cubic polynomials with marked critical points is isomorphic to C^2. For each n>0, the locus Sn formed by all polynomials with a specified critical point periodic of exact period n forms an affine algebraic set.…

Dynamical Systems · Mathematics 2019-05-14 Matthieu Arfeux , Jan Kiwi

A model for the Mandelbrot set is due to Thurston and is stated in the language of geodesic laminations. The conjecture that the Mandelbrot set is actually homeomorphic to this model is equivalent to the celebrated MLC conjecture stating…

Dynamical Systems · Mathematics 2015-03-03 Alexander Blokh , Lex Oversteegen , Ross Ptacek , Vladlen Timorin

A small perturbation of a quadratic polynomial with a non-repelling fixed point gives a polynomial with an attracting fixed point and a Jordan curve Julia set, on which the perturbed polynomial acts like angle doubling. However, there are…

Dynamical Systems · Mathematics 2016-02-01 Alexander Blokh , Lex Oversteegen , Ross Ptacek , Vladlen Timorin

We study the closure of the cubic Principal Hyperbolic Domain and its intersection $\mathcal{P}_\lambda$ with the slice $\mathcal{F}_\lambda$ of the space of all cubic polynomials with fixed point $0$ defined by the multiplier $\lambda$ at…

Dynamical Systems · Mathematics 2019-04-01 Alexander Blokh , Lex Oversteegen , Ross Ptacek , Vladlen Timorin

The famous MLC Conjecture states that the Mandelbrot set is locally connected, and it is considered by many to be the central conjecture in one-dimensional complex dynamics. Among others, it implies density of hyperbolicity in the quadratic…

Dynamical Systems · Mathematics 2018-01-08 Anna Miriam Benini

Given a hyperbolic knot $K$ and any $n\geq 2$ the abelian representations and the holonomy representation each give rise to an $(n-1)$-dimensional component in the $\operatorname{SL}(n,\Bbb{C})$-character variety. A component of the…

Geometric Topology · Mathematics 2018-03-16 Stefan Friedl , Michael Heusener

We study the dynamics of polynomial maps on the boundary of the central hyperbolic component $\mathcal H_d$. We prove the local connectivity of Julia sets and a rigidity theorem for maps on the regular part of $\partial\mathcal H_d$. Our…

Dynamical Systems · Mathematics 2025-06-24 Jie Cao , Xiaoguang Wang , Yongcheng Yin

Consider the moduli space, $\mathcal{M}_{3},$ of cubic polynomials over $\mathbb{C}$, with a marked critical point. Let $\mathscr{S}_{k,n}$ be the set of all points in $\mathcal{M}_{3}$ for which the marked critical point is strictly…

Dynamical Systems · Mathematics 2025-08-18 Niladri Patra

This article investigates the parameter space of the exponential family $z\mapsto \exp(z)+\kappa$. We prove that the boundary (in $\C$) of every hyperbolic component is a Jordan arc, as conjectured by Eremenko and Lyubich as well as Baker…

Dynamical Systems · Mathematics 2009-01-21 Lasse Rempe , Dierk Schleicher

We prove that any unicritical polynomial $f_c:z\mapsto z^d+c$ which is at most finitely renormalizable and has only repelling periodic points is combinatorially rigid. It implies that the connectedness locus (the ``Multibrot set'') is…

Dynamical Systems · Mathematics 2007-05-23 Artur Avila , Jeremy Kahn , Mikhail Lyubich , Weixiao Shen

Every oriented closed geodesic on the modular surface has a canonically associated knot in its unit tangent bundle coming from the periodic orbit of the geodesic flow. We study the volume of the associated knot complement with respect to…

Geometric Topology · Mathematics 2023-08-07 José Andrés Rodríguez Migueles

We consider knots and links in handlebodies that have hyperbolic complements and operations akin to composition. Cutting the complements of two such open along separating twice-punctured disks such that each of the four resulting…

Geometric Topology · Mathematics 2023-03-07 Colin Adams , Daniel Santiago

We prove that topologically conjugate non-renormalizable polynomials are quasi-conformally conjugate. From this we derive that each such polynomial can be approximated by a hyperbolic polynomial. As a by product we prove that the Julia set…

Dynamical Systems · Mathematics 2014-02-26 Oleg Kozlovski , Sebastian van Strien

We show that an invariant Fatou component of a hyperbolic transcendental entire function is a bounded Jordan domain (in fact, a quasidisc) if and only if it contains only finitely many critical points and no asymptotic curves. We use this…

Dynamical Systems · Mathematics 2016-02-11 Walter Bergweiler , Núria Fagella , Lasse Rempe-Gillen

Julia and Mandelbrot sets, which characterize bounded orbits in dynamical systems over the complex numbers, are classic examples of fractal sets. We investigate the analogs of these sets for dynamical systems over the hyperbolic numbers.…

Dynamical Systems · Mathematics 2019-01-09 Vance Blankers , Tristan Rendfrey , Aaron Shukert , Patrick D. Shipman

We establish certain uniform a priori bounds for hyperbolic components of disjoint type. As an application, we will prove that Sierpinski carpet hyperbolic components of disjoint type are bounded. Furthermore, we show that for each map $f$…

Dynamical Systems · Mathematics 2025-10-01 Dzimitry Dudko , Yusheng Luo

Milnor divides all bounded hyperbolic components of cubic polynomials into 4 types (A), (B), (C) and (D). In this article, we characterize the real laminations of cubic polynomials on the tame boundary of all bounded hyperbolic components…

Complex Variables · Mathematics 2026-03-09 Yueyang Wang