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In 1985 Diederich and Ohsawa proved that every disc bundle over a compact K\"ahler manifold is weakly 1-complete. In this paper, under certain conditions we generalize this result to the case of fiber bundles over compact K\"ahler manifolds…

Complex Variables · Mathematics 2022-08-25 Aeryeong Seo

We prove that any nilpotent regular covering over a compact K\"ahler surface is holomorphically convex if it does not have two ends. Furthermore, we show that the Malcev covering of any compact K\"ahler manifold has at most one end.

Complex Variables · Mathematics 2024-11-26 Yuan Liu

We investigate the existence of Lagrangian fibrations on the generalized Kummer varieties of Beauville. For a principally polarized abelian surface A of Picard number one we find the following: The Kummer variety K^n(A) is birationally…

Algebraic Geometry · Mathematics 2011-04-27 Martin G. Gulbrandsen

For a general cubic fourfold, it was observed by Donagi and Markman that the relative intermediate Jacobian fibration associated to the family of its hyperplane sections carries a natural holomorphic symplectic form making the fibration…

Algebraic Geometry · Mathematics 2018-01-16 Radu Laza , Giulia Saccà , Claire Voisin

We prove that the three-dimensional Iwasawa manifold $X$, viewed as a locally holomorphically trivial fibration by elliptic curves over its two-dimensional Albanese torus, is self-dual in the sense that the base torus identifies canonically…

Algebraic Geometry · Mathematics 2017-06-30 Dan Popovici

The compact complex manifolds considered in this article are principal torus bundles over a torus. We consider the Kodaira Spencer map of the complete Appell Humbert family (introduced by the first author in Part I) and are able to show…

Complex Variables · Mathematics 2007-05-23 Fabrizio Catanese , Paola Frediani

In the moduli space of polarized varieties the same unpolarized variety can occur multiple times However, for K3 surfaces, compact hyperk\"ahler manifolds, and abelian varieties the number is finite. This may be viewed as a consequence of…

Algebraic Geometry · Mathematics 2019-08-20 Daniel Huybrechts

Let $X$ be a smooth projective variety of Albanese fiber dimension 1 and of general type. We prove that the translates through 0 of all components of $V^0(\omega_X)$ generate $\Pic^0(X)$. We then study the pluricanonical maps of $X$. We…

Algebraic Geometry · Mathematics 2013-01-07 Zhi Jiang , Hao Sun

We construct a (non K\"ahler) compact complex 3-dimensional manifold $X$ having two following properties: 1) for any domain $D$ in $C^2$ every meromorphic map $f$ from this domain into $X$ extends to a meromorphic map from the envelope of…

Complex Variables · Mathematics 2016-09-07 Sergei Ivashkovich

In this article we study compact K\"ahler manifolds $X$ admitting non-singular holomorphic vector fields with the aim of extending to this setting the classical birational classification of projective varieties with tangent vector fields.…

Algebraic Geometry · Mathematics 2010-07-20 Jaume Amoros , Monica Manjarin , Marcel Nicolau

We proved a conjecture of D. Freed that there are no non-trivial complete special Kaehler manifolds.

Differential Geometry · Mathematics 2007-05-23 Zhiqin Lu

We study smooth fibrations of compact torsion-free Spin(7)-manifolds by Cayley submanifolds. Using geometric and topological constraints coming from the Spin(7)-structure, we show that only two topological configurations can arise. One of…

Differential Geometry · Mathematics 2026-03-31 Viktor F. Majewski , Jacek Rzemieniecki

Let X be a compact K\"ahler manifold such that the universal cover admits a compactification. We conjecture that the fundamental group is almost abelian and reduce it to a classical conjecture of Iitaka.

Algebraic Geometry · Mathematics 2014-10-13 Benoît Claudon , Andreas Hoering

We show that a unipotent vector bundle on a non-Kaehler compact complex manifold does not admit a flat holomorphic connection in general. We also construct examples of topologically trivial stable vector bundle on compact Gauduchon manifold…

Differential Geometry · Mathematics 2023-09-11 Indranil Biswas , Carlos Florentino

Four-folds with trivial canonical bundles are divided into six classes according to their holonomy group. We consider examples that are fibred by abelian surfaces over the projective plane. We construct such fibrations in five of the six…

Algebraic Geometry · Mathematics 2015-12-01 Justin Sawon

Let X be a compact hyperk\"ahler manifold containing a complex torus L as a Lagrangian subvariety. Beauville posed the question whether X admits a Lagrangian fibration with fibre L. We show that this is indeed the case if X is not…

Algebraic Geometry · Mathematics 2021-08-31 Daniel Greb , Christian Lehn , Sönke Rollenske

In this paper, we study the rigidity properties of compact Kahler manifolds. Given a smooth family of compact Kahler manifolds X over the unit disk, we show that all the fibers are mutually isomorphic if the family is locally trivial at a…

Algebraic Geometry · Mathematics 2026-05-07 Mu-Lin Li

Avila and Viana exhibit an explicit sufficient condition for the Lyapunov exponents of a linear cocycle over a Markov map to have multiplicity 1. Here, in terms of geometric perturbations, we prove that this sufficient criterion is generic…

Dynamical Systems · Mathematics 2012-08-29 Mohammad Fanaee

We prove that any holomorphic codimension 1 foliation on the complex projective plane has at most one singular point up to the action of an ad-hoc birational self map of the complex projective plane into itself. Consequently, any algebraic…

Dynamical Systems · Mathematics 2023-03-22 Dominique Cerveau , Julie Déserti

It is proved by M. Paun (1997, 2017) that the fundamental group of a compact Kahler manifold X is almost Abelian if the anti-canonical bundle -KX is nef. In this paper, we apply the recent geometric analytic theory of Kahler spaces…

Algebraic Geometry · Mathematics 2026-02-10 Xin Fu , Bin Guo , Jian Song , Juanyong Wang
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