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相关论文: A generalization of Sankaran and LVMB manifolds

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We construct a compact 6-dimensional solvmanifold endowed with a non-trivial invariant generalized K\"ahler structure and which does not admit any K\"ahler metric. This is in contrast with the case of nilmanifolds which cannot admit any…

微分几何 · 数学 2008-07-09 Anna Fino , Adriano Tomassini

We classify these threefolds, which are the ones such that their universal cover is not compact and not covered by positive-dimensional compact analytic subsets. We show that these threefolds have nonnegative Kodaira dimension, and that…

代数几何 · 数学 2007-05-23 F. Campana , Q. Zhang

The aim of this paper is to continue the study of Kodaira dimension for almost complex manifolds, focusing on the case of compact $4$-dimensional solvmanifolds without any integrable almost complex structure. According to the classification…

微分几何 · 数学 2021-06-07 Andrea Cattaneo , Antonella Nannicini , Adriano Tomassini

We give a construction of integrable complex structures on the total space of a smooth principal bundle over a complex manifold, with an even dimensional compact Lie group as structure group, under certain conditions. This generalizes the…

复变函数 · 数学 2018-02-09 Mainak Poddar , Ajay Singh Thakur

LVMB manifolds are a class of non-K\"ahler compact complex manifolds with a remarkably rich geometry: in many cases they admit a holomorphic bundle structure over a compact toric manifold. In fact, such a bundle is determined by an…

微分几何 · 数学 2026-05-28 Federico Thiella

We provide infinitely many examples of pairs of diffeomorphic, non simply connected K\" ahler manifolds of complex dimension three with different Kodaira dimensions. Also, in any possible Kodaira dimension we find infinitely many pairs of…

微分几何 · 数学 2007-05-23 Rares Rasdeaconu

We give a bimeromorphic classification of compact K\"ahler manifolds of Kodaira codimension one that admit a holomorphic one form without zeros.

复变函数 · 数学 2025-12-10 Simon Pietig

We study the Kodaira dimension of moduli spaces of polarized hyperk\"ahler varieties deformation equivalent to the Hilbert scheme of points on a K3 surface or to O'Grady's ten dimensional variety. This question was studied by…

代数几何 · 数学 2024-09-11 Ignacio Barros , Pietro Beri , Emma Brakkee , Laure Flapan

A new class of compact K\"ahler manifolds, called special, is defined, which are the ones having no surjective meromorphic map to an orbifold of general type. The special manifolds are in many respect higher-dimensional generalisations of…

代数几何 · 数学 2007-05-23 Frederic Campana

We provide a characterization of parallelizable compact complex manifolds and their quotients using holomorphic symmetric differentials. In particular we show that compact complex manifolds of Kodaira dimension 0 having strongly semiample…

代数几何 · 数学 2024-06-24 Francesco Esposito , Ernesto C. Mistretta

We construct classes of K\"ahler groups that do not have finite classifying spaces and are not commensurable to subdirect products of surface groups. Each of these groups is the fundamental group of the generic fibre of a holomorphic map…

几何拓扑 · 数学 2018-12-05 Martin R. Bridson , Claudio Llosa Isenrich

We study compact toric strict locally conformally K\"ahler manifolds. We show that the Kodaira dimension of the underlying complex manifold is $-\infty$ and that the only compact complex surfaces admitting toric strict locally conformally…

微分几何 · 数学 2019-01-08 Farid Madani , Andrei Moroianu , Mihaela Pilca

Let $(X,g)$ be a compact Riemannian manifold with quasi-positive Riemannian scalar curvature. If there exists a complex structure $J$ compatible with $g$, then the canonical bundle $K_X$ is not pseudo-effective and the Kodaira dimension…

微分几何 · 数学 2017-06-06 Xiaokui Yang

Let $(M^n, g)$ be a compact K\"ahler manifold with nonpositive bisectional curvature. We show that a finite cover is biholomorphic and isometric to a flat torus bundle over a compact K\"ahler manifold $N^k$ with $c_1 < 0$. This confirms a…

微分几何 · 数学 2014-04-30 Gang Liu

We show that in every dimension greater than or equal to 4, there exist compact Kaehler manifolds which do not have the homotopy type of projective complex manifolds. Thus they a fortiori are not deformation equivalent to a projective…

代数几何 · 数学 2015-08-14 Claire Voisin

Using the theory of totally real number fields we construct a new class of compact complex non-K{\"a}hler manifolds in every even complex dimension and study their analytic and geometric properties.

代数几何 · 数学 2022-08-30 Christian Miebach , Karl Oeljeklaus

Associated with a smooth, $d$-closed $(1, 1)$-form $\alpha$ of possibly non-rational De Rham cohomology class on a compact complex manifold $X$ is a sequence of asymptotically holomorphic complex line bundles $L_k$ on $X$ equipped with $(0,…

代数几何 · 数学 2012-01-04 Dan Popovici

The first example of a compact manifold admitting both complex and symplectic structures but not admitting a K\"ahler structure is the renowned Kodaira-Thurston manifold. We review its construction and show that this paradigm is very…

辛几何 · 数学 2014-05-01 Giovanni Bazzoni , Vicente Muñoz

The notion of Kodaira dimension has recently been extended to general almost complex manifolds. In this paper we focus on the Kodaira dimension of almost K\"ahler manifolds, providing an explicit computation for a family of almost K\"ahler…

微分几何 · 数学 2019-09-04 Andrea Cattaneo , Antonella Nannicini , Adriano Tomassini

We follow our study of non-K\"ahler complex structures on $R^4$ that we defined in a previous paper. We prove that these complex surfaces do not admit any smooth complex compactification. Moreover, we give an explicit description of their…

复变函数 · 数学 2020-08-05 Antonio J. Di Scala , Naohiko Kasuya , Daniele Zuddas
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