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Projective varieties with ample cotangent bundle satisfy many notions of hyperbolicity, and one goal of this paper is to discuss generalizations to quasi-projective varieties. A major hurdle is that the naive generalization fails, i.e. the…

Algebraic Geometry · Mathematics 2020-08-19 Kenneth Ascher , Kristin DeVleming , Amos Turchet

These notes provide an overview of various notions of hyperbolicity for varieties of log general type from the viewpoint of both arithmetic and birational geometry. The main results are based on our paper entitled "Hyperbolicity and…

Algebraic Geometry · Mathematics 2020-10-07 Kenneth Ascher , Amos Turchet

We introduce a new approach to the geometric Bombieri--Lang conjecture for hyperbolic varieties in characteristic 0. The main idea is to construct an entire curve on a special fiber of a variety over a complex function field from an…

Number Theory · Mathematics 2023-08-08 Junyi Xie , Xinyi Yuan

This survey presents recent developments concerning the Shafarevich conjecture, non-abelian Hodge theories, hyperbolicity, and the topology of complex algebraic varieties, as well as the interplay among these areas. More precisely, we…

Algebraic Geometry · Mathematics 2026-01-01 Ya Deng

This is Part II of a series of three papers. We studies the hyperbolicity of complex quasi-projective varieties $X$ in the presence of a big and reductive representation $\varrho: \pi_1(X)\to {\rm GL}_N(\mathbb{C})$. For any Galois…

Algebraic Geometry · Mathematics 2025-12-18 Benoit Cadorel , Ya Deng , Katsutoshi Yamanoi

We prove several statements about arithmetic hyperbolicity of certain blow-up varieties. As a corollary we obtain multiple examples of simply connected quasi-projective varieties that are pseudo-arithmetically hyperbolic. This generalizes…

Number Theory · Mathematics 2021-06-23 Erwan Rousseau , Julie Tzu-Yueh Wang , Amos Turchet

We formulate Vojta's conjecture for smooth weighted projective varieties, weighted multiplier ideal sheaves, and weighted log pairs and prove that all three versions of the conjecture are equivalent. In the process, we introduce generalized…

Algebraic Geometry · Mathematics 2025-11-19 Sajad Salami , Tony Shaska

It was conjectured by Lang that a complex projective manifold is Kobayashi hyperbolic if and only if it is of general type together with all of its subvarieties. We verify this conjecture for projective manifolds whose universal cover…

Complex Variables · Mathematics 2024-04-17 Sébastien Boucksom , Simone Diverio

Demailly's conjecture, which is a consequence of the Green-Griffiths-Lang conjecture on varieties of general type, states that an algebraically hyperbolic complex projective variety is Kobayashi hyperbolic. Our aim is to provide evidence…

Algebraic Geometry · Mathematics 2021-09-24 Ariyan Javanpeykar , Ljudmila Kamenova

Motivated by conjectures of Demailly, Green-Griffiths, Lang, and Vojta, we show that several notions related to hyperbolicity behave similarly in families. We apply our results to show the persistence of arithmetic hyperbolicity along field…

Algebraic Geometry · Mathematics 2024-03-12 Raymond van Bommel , Ariyan Javanpeykar , Ljudmila Kamenova

We prove that the projective complex algebraic varieties admitting a large complex local system satisfy a strong version of the Green-Griffiths-Lang conjecture.

Algebraic Geometry · Mathematics 2025-12-22 Yohan Brunebarbe

This note is an extended version of a thirty minutes talk given at the "XIX Congresso dell'Unione Matematica Italiana", held in Bologna from September 12th to September 17th, 2011. This was essentially a survey talk about connections…

Algebraic Geometry · Mathematics 2017-04-04 Simone Diverio

For smooth families with maximal variation, whose general fibers have semi-ample canonical bundle, the generalized Viehweg hyperbolicity conjecture states that the base spaces of such families are of log general type. This deep conjecture…

Algebraic Geometry · Mathematics 2020-05-01 Ya Deng , with an appendix by Dan Abramovich

We give an alternative definition of relative hyperbolicity based on properties of closest-point projections on peripheral subgroups. We also derive a distance formula for relatively hyperbolic groups, similar to the one for mapping class…

Metric Geometry · Mathematics 2012-04-04 Alessandro Sisto

In this paper we prove that every quasi-projective base space $V$ of smooth family of minimal projective manifolds with maximal variation is pseudo Kobayashi hyperbolic, i.e. $V$ is Kobayashi hyperbolic modulo a proper subvariety…

Algebraic Geometry · Mathematics 2018-09-26 Ya Deng

We discuss the notion of the universal relatively hyperbolic structure on a group which is used in order to characterize relatively hyperbolic structures on the group. We also study relations between relatively hyperbolic structures on a…

Group Theory · Mathematics 2012-05-11 Yoshifumi Matsuda , Shin-ichi Oguni , Saeko Yamagata

We prove non-hyperbolicity of primitive symplectic varieties with $b_2 \geq 5$ that satisfy the rational SYZ conjecture. If in addition $b_2 \geq 7$, we establish that the Kobayashi pseudometric vanishes identically. This in particular…

Algebraic Geometry · Mathematics 2026-05-27 Ljudmila Kamenova , Christian Lehn

In this paper, we introduce the concept of quasi-semi hyperbolic pseudo-orbits and prove that quasi-semi hyperbolicity implies quasi hyperbolicity provided the error magnitude are sufficiently small. We also have successively demonstrated…

Dynamical Systems · Mathematics 2026-04-01 Yan He , Meihua Jin

The study of entire holomorphic curves contained in projective algebraic varieties is intimately related to fascinating questions of geometry and number theory -- especially through the concepts of curvature and positivity which are central…

Algebraic Geometry · Mathematics 2020-02-14 Jean-Pierre Demailly

We study model-complete fields that avoid a given quasi-project variety $V$. There is a close connection between hyperbolicity of $V$ and the existence of the model companion for the theory of characteristic-zero fields avoiding rational…

Logic · Mathematics 2025-05-28 Michał Szachniewicz , Jinhe Ye
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