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Generalizing the well-known Shafarevich hyperbolicity conjecture, it has been conjectured by Viehweg that a quasi-projective manifold that admits a generically finite morphism to the moduli stack of canonically polarized varieties is…

代数几何 · 数学 2019-12-19 Stefan Kebekus , Sandor J. Kovacs

Let f: X -> Y be a smooth family of canonically polarized complex varieties over a smooth base. Generalizing the classical Shafarevich hyperbolicity conjecture, Viehweg conjectured that Y is necessarily of log general type if the family has…

代数几何 · 数学 2007-05-23 Stefan Kebekus , Sandor Kovacs

For a non-isotrivial family of surfaces of general type over a complex projective curve, we give upper bounds for the degree of the direct images of powers of the relative dualizing sheaf. They imply that, fixing the curve and the possible…

代数几何 · 数学 2009-10-31 E. Bedulev , E. Viehweg

Shafarevich's hyperbolicity conjecture asserts that a family of curves over a quasi-projective 1-dimensional base is isotrivial unless the logarithmic Kodaira dimension of the base is positive. More generally it has been conjectured by…

代数几何 · 数学 2007-05-23 Stefan Kebekus , Sandor J. Kovacs

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…

代数几何 · 数学 2020-05-01 Ya Deng , with an appendix by Dan Abramovich

Proven by A. Parshin and S. Arakelov in the early 70's, Shafaverich hyperbolicity conjecture states that a family of curves of genus $g\ge2$ parametrized by a non hyperbolic curve (\emph{i.e.} isomorphic to $\mathbb{P}^1$, $\mathbb{C}$,…

代数几何 · 数学 2016-04-01 Benoît Claudon

We prove Viehweg's hyperbolicity conjecture over compact bases and over bases with non-uniruled compactification. The most general case of the conjecture states that the the base space of a maximal variation family of smooth projective…

代数几何 · 数学 2013-06-25 Zsolt Patakfalvi

Consider a smooth projective family of complex polarized manifolds with semi-ample canonical sheaf over a quasi-projective manifold $V$. When the associated moduli map $V\to P_h$ from the base to coarse moduli space is quasi-finite, we…

代数几何 · 数学 2019-12-25 Ya Deng

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, we propose to study the topological hyperbolicity of…

代数几何 · 数学 2024-11-01 Xin Lü , Ruiran Sun , Kang Zuo

Consider the moduli functor of canonically polarized complex manifolds with Hilbert polynomial h, and let M_h be the corresponding coarse quasi-projective moduli scheme. We show that M_h is Brody hyperbolic in the following sense: Assume…

代数几何 · 数学 2007-05-23 Eckart Viehweg , Kang Zuo

We prove that quasi-projective base spaces of smooth families of minimal varieties of general type with maximal variation do not admit Zariski dense entire curves. We deduce the fact that moduli stacks of polarized varieties of this sort…

代数几何 · 数学 2019-12-11 Mihnea Popa , Behrouz Taji , Lei Wu

For a smooth family $V \to U$ of polarized manifolds with semi-ample canonical sheaves, we show the following result: any entire curve must be contained in the fibers of the classifying map from the base space $U$ to the moduli space. This…

代数几何 · 数学 2020-10-09 Steven Lu , Ruiran Sun , Kang Zuo

We establish the geometric Shafarevich boundedness conjecture for the moduli stack of stable minimal models, including in particular the moduli stack of KSB pairs.

代数几何 · 数学 2026-05-12 Junchao Shentu

We use the theory of Hodge modules to construct Viehweg-Zuo sheaves on the base spaces of families with maximal variation and fibers of general type, or more generally whose geometric generic fiber has a good minimal model. We deduce…

代数几何 · 数学 2016-09-16 Mihnea Popa , Christian Schnell

We prove that the universal cover of a normal complex algebraic variety admitting a faithful complex representation of its fundamental group is an analytic Zariski open subset of a holomorphically convex complex space. This is a non-proper…

代数几何 · 数学 2024-08-30 Benjamin Bakker , Yohan Brunebarbe , Jacob Tsimerman

This article is devoted to examples of (orbifold) K\"ahler groups from the perspective of the so-called Shafarevich conjecture on holomorphic convexity. It aims at pointing out that every quasi-projective complex manifold with an…

代数几何 · 数学 2016-11-29 Philippe Eyssidieux

This survey discusses hyperbolicity properties of moduli stacks and generalisations of the Shafarevich Hyperbolicity Conjecture to higher dimensions. It concentrates on methods and results that relate moduli theory with recent progress in…

代数几何 · 数学 2011-12-21 Stefan Kebekus

In this article we give a general approach to the following analogue of Shafarevich's conjecture for some polarized algebraic varieties; suppose that we fix a type of an algebraic variety and look at families of such type of varieties over…

代数几何 · 数学 2007-05-23 Andrey Todorov , Jay Jorgenson

We prove the Noether-Lefschetz conjecture on the moduli space of quasi-polarized K3 surfaces. This is deduced as a particular case of a general theorem that states that low degree cohomology classes of arithmetic manifolds of orthogonal…

代数几何 · 数学 2015-04-15 Nicolas Bergeron , Zhiyuan Li , John Millson , Colette Moeglin

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 $(X,D)$ such that $W=X\setminus D$ admits a Finsler pseudometric that…

代数几何 · 数学 2021-07-20 Ya Deng , Steven Lu , Ruiran Sun , Kang Zuo
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