activity
20172026
most citedThe Shafarevich conjecture revisited: Finiteness of pointed families of polarized varieties

12 citations · 22 across the 18 of their papers we have counts for

collaborators

19 papers

math.AG2026

Isomonodromic deformations of Higgs bundles and characterization of the non-abelian Noether--Lefschetz locus

Tianzhi Hu, Ruiran Sun, Jinbang Yang +1

Let be a smooth proper family of smooth projective varieties. An irreducible complex local system on a fiber admits an isomonodromic deformation, hence determines a holo…

math.AG2026

Higher order isomonodromic deformation of Higgs bundles and a characterization of the non-abelian Noether-Lefschetz locus

Tianzhi Hu, Ruiran Sun, Jinbang Yang +1

The purpose of this paper is to establish a local theory of the non-abelian Noether--Lefschetz locus. Given a family of projective manifolds over a complex variety , the isomono…

math.AG2026

Rigidity Criterion for Certain Calabi-Yau Families

Ruiran Sun, Chenglong Yu, Kang Zuo

We prove a new rigidity criterion for families of polarized Calabi--Yau manifolds. If, near a boundary point, the total space is smooth, the relative canonical bundle is trivial, a…

math.AG2025

Non-Abelian Kodaira-Spencer Map and non-existence of holomorphic isomonodromic deformation of Higgs bundles over Teichmüller spaces

Tianzhi Hu, Ruiran Sun, Kang Zuo

We define the isomonodromic deformation of a Higgs bundle on a compact Riemann surface via the Hitchin--Simpson correspondence and the isomonodromic deformation of the associated l…

math.AG2025

Kodaira-Spencer Map on the Hitchin-Simpson Correspondence

Tianzhi Hu, Ruiran Sun, Kang Zuo

We define the isomonodromic deformation of a Higgs bundle over a compact Riemann surface via the Hitchin-Simpson correspondence and the isomonodromic deformation of a local system.…

math.AG2024

Parahoric reduction theory of formal connections (or Higgs fields)

Zhi Hu, Pengfei Huang, Ruiran Sun +1

In this paper, we establish the parahoric reduction theory of formal connections (or Higgs fields) on a formal principal bundle with parahoric structures, which generalizes Babbitt…

math.AG2024★ 1 cited

On the distribution of non-rigid families in the moduli spaces

Ke Chen, Tianzhi Hu, Ruiran Sun +1

This paper investigates the distribution of non-rigid families in a moduli space of polarized projective manifolds for which the infinitesimal Torelli theorem holds.…

math.CV2023

Entire holomorphic curves into intersecting general hypersurfaces

Zhangchi Chen, Dinh Tuan Huynh, Ruiran Sun +1

Let be hypersurfaces in with total degrees , in general position and satisfying a generic…

math.AG2023

Finiteness of pointed maps to moduli spaces of polarized varieties

Ariyan Javanpeykar, Steven Lu, Ruiran Sun +1

We establish a finiteness result for pointed maps to the base space of a smooth projective family of varieties with maximal variation in moduli. For its proof, we establish the…

math.AG2022

Hyperbolicity of varieties with big linear representation of

Ruiran Sun

We show the following algebraicity result for a complex projective variety with big representation of into a semi-simple algebraic group: There exists a proper subvariety…

math.AG2021

Topological Hyperbolicity of Moduli spaces of Elliptic Surfaces

Xin Lü, Ruiran Sun, Kang Zuo

We introduce the notion of topological hyperbolicity to characterize the largeness of the topological fundamental group of a complex variety. Inspired by the Shafarevich conjecture…

math.AG2020

Big Picard Theorem for jet differentials and Non-archimedean Ax-Lindemann Theorem

Dinh Tuan Huynh, Ruiran Sun, Song-Yan Xie

By implementing jet differential techniques in non-archimedean geometry, we obtain a big Picard type extension theorem, which generalizes a previous result of Cherry and Ru. As app…

math.AG2020

Holomorphic curves in Base Spaces of Families of Polarized Manifolds

Steven Lu, Ruiran Sun, Kang Zuo

For a smooth family of polarized manifolds with semi-ample canonical sheaves, we show the following result: any entire curve must be contained in the fibers of the classi…

math.AG2020★ 2 cited

Non-archimedean hyperbolicity of the moduli space of curves

Ruiran Sun

Let be a complete algebraically closed non-archimedean valued field of characteristic zero, and let be a finite type scheme over . We say is -analytically Borel h…

math.AG2020

Second Main Theorem on the Moduli Spaces of Polarized Varieties

Ruiran Sun

Let be a smooth log pair over such that the complement carries a maximally varied family of polarized manifolds. We prove a version of sec…

math.AG2020★ 12 cited

The Shafarevich conjecture revisited: Finiteness of pointed families of polarized varieties

Ariyan Javanpeykar, Ruiran Sun, Kang Zuo

Motivated by Lang-Vojta's conjectures on hyperbolic varieties, we prove a new version of the Shafarevich conjecture in which we establish the finiteness of pointed families of pola…

math.AG2019★ 3 cited

Picard theorems for moduli spaces of polarized varieties

Ya Deng, Steven Lu, Ruiran Sun +1

As a result of our study of the hyperbolicity of the moduli space of polarized manifold, we give a general big Picard theorem for a holomorphic curve on a log-smooth pair s…

math.AG2017

Base change of twisted Fontaine-Faltings modules and Twisted Higgs-de Rham flows over very ramified valuation rings

Ruiran Sun, Jinbang Yang, Kang Zuo

In this short notes, we prove a stronger version of Theorem 0.6 in our previous paper arXiv:1709.01485: Given a smooth log scheme $(\mathcal{X} \supset \mathcal{D})_{W(\mathbb{F}_q…

math.AG2017★ 4 cited

Projective Crystalline Representations of Étale Fundamental Groups and Twisted Periodic Higgs-de Rham Flow

Ruiran Sun, Jinbang Yang, Kang Zuo

This paper contains three new results. {\bf 1}.We introduce new notions of projective crystalline representations and twisted periodic Higgs-de Rham flows. These new notions genera…