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We derive necessary conditions for a complex projective structure on a complex surface to arise via the Levi-Civita connection of a (pseudo-)K\"ahler metric. Furthermore we show that the (pseudo-)K\"ahler metrics defined on some domain in…

Differential Geometry · Mathematics 2023-07-19 Thomas Mettler

The aim of this paper is to classify compact Kahler manifolds with quasi-constant holomorphic sectional curvature.

Differential Geometry · Mathematics 2016-02-26 Wlodzimierz Jelonek

In this work, we find an equation that relates the Ricci curvature of a riemannian manifold $M$ and the second fundamental forms of two orthogonal foliations of complementary dimensions, $\mathcal{F}$ and $\mathcal{F}^{\bot}$, defined on…

Differential Geometry · Mathematics 2017-11-16 André de Oliveira Gomes , Eurípedes Carvalho da Silva

We give a complex polarized variation of Hodge structure over a compact K"ahler manifold $M$ which controls all finite-dimensional complex polarized variations of Hodge structure over $M$ and their tensor relations. As a corollary, we…

Algebraic Geometry · Mathematics 2022-07-25 Hisashi Kasuya

Let X be a compact complex surface with a real foliation. If all leaves are compact complex curves, the foliation must be holomorphic.

Complex Variables · Mathematics 2007-05-23 Joerg Winkelmann

We propose that under certain conditions heterotic string compactifications on half-flat and nearly-Kahler manifolds are equivalent. Based on this correspondence we argue that the moduli space of the nearly-Kahler manifolds under discussion…

High Energy Physics - Theory · Physics 2009-11-10 Andrei Micu

We outline a method to determine analytic K\"ahler potentials with associated approximately Ricci-flat K\"ahler metrics on Calabi-Yau manifolds. Key ingredients are numerically calculating Ricci-flat K\"ahler potentials via machine learning…

High Energy Physics - Theory · Physics 2025-06-23 Seung-Joo Lee , Andre Lukas

A classification theorem for nearly K\"ahler manifolds of constant antiholomorphic sectional curvature is proved.

Differential Geometry · Mathematics 2010-09-15 Georgi Ganchev , Ognian Kassabov

We analyse some properties of the cohomogeneity one Ricci soliton equations, and use Ansatze of cohomogeneity one type to produce new explicit examples of complete Kahler Ricci solitons of expanding, steady and shrinking types. These…

Differential Geometry · Mathematics 2008-02-07 Andrew S. Dancer , Mckenzie Y. Wang

The purpose of this paper is to establish a partial regularity theory on certain homogeneous complex Monge-Ampere equations. As consequences of this new theory, we prove the uniqueness of extremal Kaehler metrics and give an necessary…

Differential Geometry · Mathematics 2007-05-23 Xiuxiong Chen , Gang Tian

We prove the local classification of K\"ahler metrics with constant holomorphic sectional curvature by exploiting the geometry of the bundle of 1-jets of holomorphic functions.

Differential Geometry · Mathematics 2025-07-30 Martin de Borbon

A systematic study of the contributions at infinity for the cohomology of variations of polarized Hodge structures over quasicompact K\"ahler manifolds. Several isomorphisms between different cohomologies given.

Algebraic Geometry · Mathematics 2007-05-23 Juergen Jost , Yihu Yang , Kang Zuo

In this thesis, we study cohomological properties of non-K\"ahler manifolds. In particular, we are concerned in investigating the cohomology of compact (almost-)complex manifolds, and of manifolds endowed with special structures, e.g.,…

Differential Geometry · Mathematics 2013-02-05 Daniele Angella

We construct K\"ahler groups with arbitrary finiteness properties by mapping products of closed Riemann surfaces holomorphically onto an elliptic curve: for each $r\geq 3$, we obtain large classes of K\"ahler groups that have classifying…

Geometric Topology · Mathematics 2018-12-17 Claudio Llosa Isenrich

This is the first in a series of papers about foliations in derived geometry. After introducing derived foliations on arbitrary derived stacks, we concentrate on quasi-smooth and rigid derived foliations on smooth complex algebraic…

Algebraic Geometry · Mathematics 2020-05-22 Bertrand Toën , Gabriele Vezzosi

This paper is concerned with the existence of constant scalar curvature Kaehler metrics on blow ups at finitely many points of compact manifolds which already carry constant scalar curvature Kaehler metrics. We also consider the…

Differential Geometry · Mathematics 2007-05-23 Claudio Arezzo , Frank Pacard

The K\"ahler cone of a compact manifold carries a natural Riemannian metric, given by the intersection product of its cohomology ring. We write down the curvature tensor of this metric by embedding the K\"ahler cone in the space of…

Algebraic Geometry · Mathematics 2012-11-30 Gunnar Þór Magnússon

In this second part of our overview of the different metric curvatures and their various applications, we concentrate on the Ricci curvature and flow for polyhedral surfaces and higher dimensional manifolds, and we largely review our…

Metric Geometry · Mathematics 2019-10-01 Emil Saucan

We study the basic geometric properties of an indefinite locally conformal Kaehler manifold.

Differential Geometry · Mathematics 2007-05-23 Sorin Dragomir , Krishan L. Duggal

We report on a few interrelations between bi-Hermitian metrics and locally conformally K\"ahler metrics on complex surfaces.

Differential Geometry · Mathematics 2025-01-13 Massimiliano Pontecorvo