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Related papers: A Real Shafarevich Conjecture for Universal Covers

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This article is concerned with the convexity properties of universal covers of projective varieties. We study the relation between the convexity properties of the universal cover of X and the properties of the pullback map sending vector…

Algebraic Geometry · Mathematics 2007-05-23 F. Bogomolov , B. De Oliveira

We prove that the universal covering space of a complex projective manifold is holomorphically convex provided its fundamental group is linear.

Algebraic Geometry · Mathematics 2009-04-07 Philippe Eyssidieux , L. Katzarkov , Tony Pantev , Mohan Ramachandran

In this paper, we prove the holomorphic convexity of the covering of a complex projective {normal} variety $X$, which corresponds to the intersection of kernels of reductive representations $\rho:\pi_1(X)\to {\rm GL}_{N}(\mathbb{C})$,…

Algebraic Geometry · Mathematics 2024-05-30 Ya Deng , Katsutoshi Yamanoi , Ludmil Katzarkov

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…

Algebraic Geometry · Mathematics 2024-08-30 Benjamin Bakker , Yohan Brunebarbe , Jacob Tsimerman

The paper contains a general construction which produces new examples of non simply-connected smooth projective surfaces. We analyze the resulting surfaces and their fundamental groups. Many of these fundamental groups are expected to be…

alg-geom · Mathematics 2008-02-03 Fedor Bogomolov , Ludmil Katzarkov

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…

Algebraic Geometry · Mathematics 2016-11-29 Philippe Eyssidieux

We shall show that a smooth, quasi-projective variety $X$ has a holomorphically convex universal covering $\wt X$ when (i) $\pi_1(X)$ is residually nilpotent and (ii) there is an admissable variation of \mhs\ over $X$ whose monodromy…

Algebraic Geometry · Mathematics 2022-10-17 Mark Green , Phillip Griffiths , Ludmil Katzarkov

We prove a conjecture of Shafarevich about universal coverings of projective manifolds provided the fundamental group is residually finite.

Algebraic Geometry · Mathematics 2014-01-21 Robert Treger

In this paper we prove that the universal cover of a smooth projective variety with nilpotent fundamental group is holomorphically convex.

alg-geom · Mathematics 2008-02-03 Ludmil Katzarkov

The Shafarevich conjecture for a class of varieties over a number field posits the finitude of those with good reduction outside a finite set of primes. In the case of hypersurfaces in the torus $\mathbb{G}_m^n$, a natural class to consider…

Number Theory · Mathematics 2024-08-19 Caleb Ji

In this paper, we prove the Shafarevich conjecture for proper hyperbolic polycurves, which is a higher dimensional analogue of that for proper hyperbolic curves. First, we study theories of proper hyperbolic polycurves over regular schemes.…

Number Theory · Mathematics 2019-11-05 Ippei Nagamachi , Teppei Takamatsu

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…

Algebraic Geometry · Mathematics 2007-05-23 Stefan Kebekus , Sandor Kovacs

In this paper, we establish a structure theorem for a smooth projective variety $X$ with semi-positive holomorphic sectional curvature. Our structure theorem contains the solution for Yau's conjecture and it can be regarded as a natural…

Differential Geometry · Mathematics 2018-11-13 Shin-ichi Matsumura

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…

Algebraic Geometry · Mathematics 2007-05-23 Andrey Todorov , Jay Jorgenson

We will prove that given a genus-2 fibration $f: X \rightarrow C$ on a smooth projective surface $X$ such that $b_1(X)=b_1(C)+2$, the fundamental group of $X$ is almost isomorphic to $\pi_1(C) \times \pi_1(E)$, where $E$ is an elliptic…

Algebraic Geometry · Mathematics 2015-12-31 R. V. Gurjar , Sagar Kolte

Let X be a normal connected complex algebraic variety equipped with a semisimple complex representation of its fundamental group. Then, under a maximality assumption, we prove that the covering space of X associated to the kernel of the…

Algebraic Geometry · Mathematics 2023-05-18 Yohan Brunebarbe

Let $\mathcal X$ be a regular variety, flat and proper over a complete regular curve over a finite field, such that the generic fiber $X$ is smooth and geometrically connected. We prove that the Brauer group of $\mathcal X$ is finite if and…

Number Theory · Mathematics 2018-08-07 Thomas H. Geisser

An affine manifold is a manifold with an affine structure, i.e. a torsion-free flat affine connection. We show that the universal cover of a closed affine 3-manifold $M$ with holonomy group of shrinkable dimension (or discompacit\'e in…

dg-ga · Mathematics 2008-02-03 Suhyoung Choi

Irreducible symplectic varieties are higher-dimensional analogues of K3 surfaces. In this paper, we prove the Shafarevich conjecture for irreducible symplectic varieties of fixed deformation class. We also observe that the second…

Number Theory · Mathematics 2022-04-26 Teppei Takamatsu

We prove finiteness results for sets of varieties over number fields with good reduction outside a given finite set of places using cyclic covers. We obtain a version of the Shafarevich conjecture for weighted projective surfaces, double…

Algebraic Geometry · Mathematics 2022-07-26 Ariyan Javanpeykar , Daniel Loughran , Siddharth Mathur
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