activity
20182026
most citedNon-wandering Fatou components for strongly attracting polynomial skew products

6 citations · 12 across the 15 of their papers we have counts for

collaborators

16 papers

math.NT2026

Exceptional maps and abelian points in backward orbits

Zhuchao Ji, Jiarui Song, Junyi Xie

Consider a number field , a polarized endomorphism on a normal projective variety, and a non-exceptional point for . We show that the extension $K(f^{-\infty}(…

math.DS2026

Genus and Gonality of Small Curves, Dynamical Uniform Boundedness, and Bifurcation

Zhuchao Ji, Junyi Xie

We prove the Gonality Conjecture in arithmetic dynamics: for any non-isotrivial one-parameter algebraic family of rational maps on , the gonality of dist…

math.DS2026

Rigidity of Lyapunov exponents for polynomials

Zhuchao Ji, Junyi Xie, Geng-Rui Zhang

Let be polynomials of degree with disconnected Julia sets. We prove that they have the same Lyapunov exponent $\mathcal{L}_f=\mathcal{L}_g…

math.DS2026

Equidistribution speed of iterated preimages for rational maps on the Riemann sphere

Mai Hao, Zhuchao Ji

The exponential equidistribution speed of iterated preimages for holomorphic endomorphisms on was established by Drasin-Okuyama for , and by Dinh-Sibony for arb…

math.NT2026

A geometric approach to the uniform boundedness of -primary torsion points

Zhuchao Ji, Jiarui Song, Junyi Xie

We prove that for a non-isotrivial abelian scheme over a smooth curve, the genus of a generic sequence of multi-sections with small heights tends to infinity. As an application, we…

math.DS2025

Cyclotomic integral points for affine dynamics

Zhuchao Ji, Junyi Xie, Geng-Rui Zhang

Let be a regular endomorphism of algebraic degree (i.e., extends to an endomorphism on of algebraic degree ) defined…

math.CV2024

The moduli space of a rational map is Carathéodory hyperbolic

Zhuchao Ji, Junyi Xie

Let be a rational map of degree . The moduli space , introduced by McMullen and Sullivan, is a complex analytic space consisting all quasiconformal conj…

math.DS2023

The multiplier spectrum morphism is generically injective

Zhuchao Ji, Junyi Xie

In this paper, we consider the multiplier spectrum of periodic points, which is a natural morphism defined on the moduli space of rational maps on the projective line. A celebrated…

math.DS2023★ 1 cited

Space spanned by characteristic exponents

Zhuchao Ji, Junyi Xie, Geng-Rui Zhang

We prove several rigidity results on multiplier spectrum and length spectrum. For example, we show that for every non-exceptional rational map $f:\mathbb{P}^1(\mathbb{C})\to\mathbb…

math.DS2023★ 1 cited

DAO for curves

Zhuchao Ji, Junyi Xie

We prove the Dynamical André-Oort (DAO) conjecture proposed by Baker and DeMarco for families of rational maps parameterized by an algebraic curve. In fact, we prove a stronger res…

math.DS2023★ 1 cited

Local rigidity of Julia sets

Zhuchao Ji, Junyi Xie

We find criteria ensuring that a local (holomorphic, real analytic, ) homeomorphism between the Julia sets of two given rational functions comes from an algebraic corresponden…

math.DS2022★ 1 cited

The wandering domain problem for attracting polynomial skew products

Zhuchao Ji, Weixiao Shen

Wandering Fatou components were recently constructed by Astorg et al for higher-dimensional holomorphic maps on projective spaces. Their examples are polynomial skew products with…

math.DS2022★ 1 cited

Homoclinic orbits, multiplier spectrum and rigidity theorems in complex dynamics

Zhuchao Ji, Junyi Xie

The aims of this paper are to answer several conjectures and questions about multiplier spectrum of rational maps and to give new proofs of several rigidity theorems in complex dyn…

math.DS2020★ 1 cited

Structure of Julia sets for post-critically finite endomorphisms on

Zhuchao Ji

Let be a post-critically finite endomorphism (PCF map for short) on , let denote the Julia set and let denote the support of the measure of maximal en…

math.DS2019

Non-uniform hyperbolicity in polynomial skew products

Zhuchao Ji

Let be a polynomial skew product which leaves invariant an attracting vertical line . Assume moreover restricted to is non-uniformly h…

math.DS2018★ 6 cited

Non-wandering Fatou components for strongly attracting polynomial skew products

Zhuchao Ji

We show a partial generalization of Sullivan's non-wandering domain theorem in complex dimension two. More precisely, we show the non-existence of wandering Fatou components for po…