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Related papers: Compact K\"ahler contact manifolds

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We prove that every locally pluripolar set on a compact complex manifold is pluripolar. This extends similar results in K\"ahler case.

Complex Variables · Mathematics 2018-12-04 Duc-Viet Vu

This paper is devoted, first of all, to give a complete unified proof of the Characterization Theorem for compact generalized $p-$K\"ahler manifolds (Theorem 3.2). The proof is based on the classical duality between "closed" positive forms…

Differential Geometry · Mathematics 2017-07-12 Lucia Alessandrini

This paper has 3 principal goals: (1) to survey what is know about mapping class and Torelli groups of simply connected compact Kaehler manifolds, (2) supplement these results, and (3) present a list of questions and open problems to…

Algebraic Geometry · Mathematics 2024-01-15 Richard Hain

We prove the existence of a Mori contraction on a compact Kaehler threefold whose canonical bundle is (analytically) not nef if the threefold can be approximated by projective threefolds or if the algebraic dimension is 2.

Algebraic Geometry · Mathematics 2007-05-23 Thomas Peternell

A Kaehler-Nijenhuis manifold is a Kaehler manifold M, with metric g, complex structure J and Kaehler form F, endowed with a Nijenhuis tensor field A that is compatible with the Poisson stucture defined by F in the sense of the theory of…

Differential Geometry · Mathematics 2007-05-23 Izu Vaisman

A solvmanifold is a compact differentiable manifold M on which a connected solvable Lie group G acts transitively. As the main result, we will see, applying a result of Arapura and Nori on solvable Kaehler groups and some of the author's…

Complex Variables · Mathematics 2016-01-19 Keizo Hasegawa

We prove that any compact K\"ahler 3-dimensional manifold which has no non-trivial complex subvarieties is a torus. This is a very special case of a general conjecture on the structure of 'simple manifolds', central in the bimeromorphic…

Algebraic Geometry · Mathematics 2014-01-16 Frédéric Campana , Jean-Pierre Demailly , Misha Verbitsky

We apply the combinatorial theory of spherical varieties to characterize the momentum polytopes of polarized projective spherical varieties. This enables us to derive a classification of these varieties, without specifying the open orbit,…

Algebraic Geometry · Mathematics 2020-04-16 Stéphanie Cupit-Foutou , Guido Pezzini , Bart Van Steirteghem

We give a simple construction of new, complete, finite volume manifolds $M$ of bounded, nonpositive curvature. These manifolds have ends that look like a mixture of locally symmetric ends of different ranks and their fundamental groups are…

Geometric Topology · Mathematics 2021-03-17 Grigori Avramidi , T. Tam Nguyen Phan

Let $\pi: \mathcal{X}^* \rightarrow B^*$ be an algebraic family of compact K\"ahler manifolds of complex dimension $n$ with negative first Chern class over a punctured disc $B^*\in \mathbb{C}$. Let $g_t$ be the unique K\"ahler-Einstein…

Differential Geometry · Mathematics 2017-06-07 Jian Song

We prove abundance for a minimal Kaehler threefold which is not both simple and non-Kummer. Recall that a variety is simple if there is no compact subvariety of positive dimension through a sufficiently general point . Furthermore we prove…

Algebraic Geometry · Mathematics 2009-09-25 Thomas Peternell

Being inspired by a work of Curtis T. McMullen about a very impressive automorphism of a K3 surface of Picard number zero, we shall clarify the structure of the bimeromorphic automorphism group of a non-projective hyperk\"ahler manifold, up…

Algebraic Geometry · Mathematics 2007-05-23 Keiji Oguiso

Let a torus $T$ act on a symplectic manifold $(M,\omega)$ with moment map $\phi$. We say that the Hamiltonian $T$-manifold $(M,\omega,\phi)$ has complexity one if $\frac{1}{2} \dim M - \dim T = 1$, and that it is K\"ahler if it admits an…

Symplectic Geometry · Mathematics 2026-03-16 Isabelle Charton , Liat Kessler , Susan Tolman

We present an inductive strategy to show the existence of rational curves on compact Kaehler manifolds which are not minimal models but have a pseudoeffective canonical bundle. The tool for this inductive strategy is a weak subadjunction…

Algebraic Geometry · Mathematics 2017-10-26 Junyan Cao , Andreas Höring

The twistor method is applied for obtaining examples of generalized Kaehler structures which are not yielded by Kaehler structures.

Differential Geometry · Mathematics 2009-11-11 Johann Davidov , Oleg Mushkarov

We consider compact K\"ahler manifolds acted on by a connected compact Lie group $K$ of isometries in Hamiltonian fashion. We prove that the squared moment map $\|\mu\|^2$ is constant if and only if the manifold is biholomorphically and…

Symplectic Geometry · Mathematics 2007-05-23 Anna Gori , Fabio Podesta'

A contact hypersurface in a Kaehler manifold is a real hypersurface for which the induced almost contact metric structure determines a contact structure. We carry out a systematic study of contact hypersurfaces in Kaehler manifolds. We then…

Differential Geometry · Mathematics 2013-12-11 Jurgen Berndt , Young Jin Suh

In this note, we exhibit infinite families of tight non-fillable contact manifolds supported by planar open books with vanishing Heegaard Floer contact invariants. Moreover, we also exhibit an infinite such family where the supported…

Geometric Topology · Mathematics 2016-09-20 James Conway , Amey Kaloti , Dheeraj Kulkarni

It is proved that if an almost K\"ahler manifold of dimension greater or equal to 8 is of pointwise constant antiholomorphic sectional curvature, then it is a complex space form.

Differential Geometry · Mathematics 2010-10-08 Maria Falcitelli , Angela Farinola , Ognian Kassabov

We show that symplectic forms taming complex structures on compact manifolds are related to special types of almost generalized K\"ahler structures. By considering the commutator $Q$ of the two associated almost complex structures…

Differential Geometry · Mathematics 2011-12-13 Nicola Enrietti , Anna Fino , Gueo Grantcharov
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