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Related papers: The Critical Locus for Complex H\'{e}non Maps

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Non-renormalizable Newton maps are rigid. More precisely, we prove that their Julia set carries no invariant line fields and that the topological conjugacy is equivalent to quasi-conformal conjugacy in this case.

Dynamical Systems · Mathematics 2023-08-28 Pascale Roesch , Yongcheng Yin , Jinsong Zeng

The notion of a d-critical locus is an ingredient in the definition of motivic Donaldson-Thomas invariants by [BJM19]. In this paper we show that there is a d-critical locus structure on the Hilbert scheme of dimension zero subschemes on…

Algebraic Geometry · Mathematics 2024-09-30 Sheldon Katz , Yun Shi

This note will study complex polynomial maps of degree $n\ge 2$ with only one critical point.

Dynamical Systems · Mathematics 2012-03-27 John Milnor

A study of real quadratic maps with real critical points, emphasizing the effective construction of critically finite maps with specified combinatorics. We discuss the behavior of the Thurston algorithm in obstructed cases, and in one…

Dynamical Systems · Mathematics 2021-11-08 Araceli Bonifant , John Milnor , Scott Sutherland

The theory of polynomial-like maps is of fundamental importance in holomorphic dynamics. We study dynamical properties of a larger class of maps. Our main result is that, under some natural conditions, a map of this class has a completely…

Dynamical Systems · Mathematics 2025-10-17 Genadi Levin

The invariant class under parabolic and near-parabolic renormalizations constructed by Inou and Shishikura has been proved to be extremely useful in recent years. It leads to several important progresses on the dynamics of certain…

Dynamical Systems · Mathematics 2024-07-02 Fei Yang

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

We investigate the critical points of the basic (quasi-)modular forms $E_2$, $E_4$, and $E_6$. They occur where some associated polymorphic functions have poles. By an explicit description of these polymorphic functions as conformal maps,…

Complex Variables · Mathematics 2025-06-27 Mario Bonk

This article deals with the question of local connectivity of the Julia set of polynomials and rational maps. It essentially presents conjectures and questions.

Dynamical Systems · Mathematics 2014-05-09 Alexandre Dezotti , Pascale Roesch

We describe the topological behavior of typical orbits of complex quadratic polynomials P_alpha(z)=e^{2\pi i alpha} z+z^2, with alpha of high return type. Here we prove that for such Brjuno values of alpha the closure of the critical orbit,…

Dynamical Systems · Mathematics 2016-07-13 Davoud Cheraghi

In \cite{Bedford}, the dynamics of a particular polynomial diffeomorphism of $\mathbb{C}^N$, called a polynomial shift-like map of type $\nu$, has been studied as a higher dimensional analog of H\'enon maps. In this note, we prove that the…

Dynamical Systems · Mathematics 2026-05-01 Ramanpreet Kaur

We compare and contrast various notions of the "critical locus" of a complex analytic function on a singular space. After choosing a topological variant as our primary notion of the critical locus, we justify our choice by generalizing L\^e…

Algebraic Geometry · Mathematics 2007-05-23 David B. Massey

In this paper we study homeomorphisms of the circle with several critical points and bounded type rotation number. We prove complex a priori bounds for these maps. As an application, we get that bi-cubic circle maps with same bounded type…

Dynamical Systems · Mathematics 2025-09-18 Gabriela Estevez , Daniel Smania , Michael Yampolsky

In this paper, we study the Hamiltonian differential systems with homogeneous nonlinearity parts on $\mathbb{C}^2$. Firstly, we present a series of topological properties of polynomial Hamiltonian functions, with a particular focus on the…

Dynamical Systems · Mathematics 2024-08-23 Guangfeng Dong , Jiazhong Yang

Let $K$ be a bounded convex domain in $\mathbb{R}^2$ symmetric about the origin. The critical locus of $K$ is defined to be the (non-empty compact) set of lattices $\Lambda$ in $\mathbb{R}^2$ of smallest possible covolume such that $\Lambda…

Metric Geometry · Mathematics 2021-01-13 Dmitry Kleinbock , Anurag Rao , Srinivasan Sathiamurthy

A cubic polynomial $P$ with a non-repelling fixed point $b$ is said to be \emph{immediately renormalizable} if there exists a (connected) quadratic-like invariant filled Julia set $K^*$ such that $b\in K^*$. In that case exactly one…

Dynamical Systems · Mathematics 2021-02-23 Alexander Blokh , Lex Oversteegen , Vladlen Timorin

In this paper, we prove that for any post-critically finite rational map $f$ on the Riemann sphere $\overline{\mathbb{C}}$, and for each sufficiently large integer $n$, there exists a finite and connected graph $G$ in the Julia set of $f$…

Dynamical Systems · Mathematics 2024-11-26 Guizhen Cui , Yan Gao , Jinsong Zeng

We prove a sufficient condition for the Jacobian problem in the setting of real, complex and mixed polynomial mappings. This follows from the study of the bifurcation locus of a mapping subject to a new Newton non-degeneracy condition.

Algebraic Geometry · Mathematics 2016-11-28 Ying Chen , L. R. G. Dias , Kiyoshi Takeuchi , Mihai Tibar

We consider a lattice of weakly coupled expanding circle maps. We construct, via a cluster expansion of the Perron-Frobenius operator, an invariant measure for these infinite dimensional dynamical systems which exhibits space-time-chaos.

chao-dyn · Physics 2009-10-22 J. Bricmont , A. Kupiainen

We study the forward orbit of the critical point for polynomials of the form $f_c=z^2+c$ defined over $\mathbb{Z}_p$. Hubbard trees capture the dynamical behavior for such maps with finite critical orbit in $\mathbb{C}$. We suggest a notion…

Number Theory · Mathematics 2016-03-15 Cara Mullen