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We study degenerate complex Monge-Amp\`ere equations of the form $(\omega+dd^c \varphi)^n = e^{t \varphi} \mu$ where $\omega$ is a big semi-positive form on a compact K\"ahler manifold $X$ of dimension $n$, $t \in \R^+$, and $\mu=f\omega^n$…

代数几何 · 数学 2008-09-24 Philippe Eyssidieux , Vincent Guedj , Ahmed Zeriahi

Cone spherical metrics are conformal metrics with constant curvature one and finitely many conical singularities on compact Riemann surfaces. By using Strebel differentials as a bridge, we construct a new class of cone spherical metrics on…

复变函数 · 数学 2020-06-25 Jijian Song , Yiran Cheng , Bo Li , Bin Xu

This article finds constant scalar curvature Kahler metrics on certain compact complex surfaces. The surfaces considered are those admitting a holomorphic submersion to a curve, with fibres of genus at least 2. The proof is via an adiabatic…

微分几何 · 数学 2007-05-23 Joel Fine

In this article we pursue the following main goals. In the first place, we establish the existence of "estimable" Hermite--Einstein metrics for stable reflexive coherent sheaves on compact normal K\"ahler spaces. If moreover the background…

微分几何 · 数学 2024-01-23 Junyan Cao , Patrick Graf , Philipp Naumann , Mihai Paun , Thomas Peternell , Xiaojun Wu

We study Einstein deformations of negative K\"ahler Einstein metrics. We relate the second order Einstein deformation theory of negative K\"ahler-Einstein metrics to the complex geometry of the underlying K\"ahler manifold. After suitable…

微分几何 · 数学 2026-03-11 Paul-Andi Nagy

We study Einstein metrics on smooth compact 4-manifolds with an edge-cone singularity of specified cone angle along an embedded 2-manifold. To do so, we first derive modified versions of the Gauss-Bonnet and signature theorems for arbitrary…

微分几何 · 数学 2017-05-17 Michael Atiyah , Claude LeBrun

We prove that there are just two types of isolated singularities of special K\"ahler metrics in real dimension two provided the associated holomorphic cubic form does not have essential singularities. We also construct examples of such…

微分几何 · 数学 2015-11-05 Andriy Haydys

The structure of a light cone in the Goedel universe is studied. We derive the intrinsic cone metric, calculate the rotation coefficients of the ray congruence forming the cone, determine local differential invariants up to second order,…

广义相对论与量子宇宙学 · 物理学 2009-11-11 G. Dautcourt , M. Abdel-Megied

In this paper, we study the boundary behavior of the negatively curved K\"ahler-Einstein metric attached to a log canonical pair $(X,D)$ such that $K_X+D$ is ample. In the case where $X$ is smooth and $D$ has simple normal crossings support…

微分几何 · 数学 2014-10-21 Henri Guenancia , Damin Wu

This is a survey of our recent work on degenerations of Ricci-flat Kahler metrics on compact Calabi-Yau manifolds with Kahler classes approaching the boundary of the Kahler cone.

微分几何 · 数学 2011-07-06 Valentino Tosatti

We study the Dirichlet problem of the Abreu equation. The solutions provide the Kahler metrics of constant scalar curvature on the complex torus.

微分几何 · 数学 2010-08-17 Bohui Chen , An-Min Li , Li Sheng

We show that on Kahler manifolds with negative first Chern class, the sequence of algebraic metrics introduced by H. Tsuji converges uniformly to the Kahler-Einstein metric. For algebraic surfaces of general type and orbifolds with isolated…

微分几何 · 数学 2018-12-14 Jian Song , Ben Weinkove

We describe two simple obstructions to the existence of Ricci-flat Kahler cone metrics on isolated Gorenstein singularities or, equivalently, to the existence of Sasaki-Einstein metrics on the links of these singularities. In particular,…

高能物理 - 理论 · 物理学 2008-11-26 Jerome P. Gauntlett , Dario Martelli , James Sparks , Shing-Tung Yau

In this paper we develop a systematic deformation theory for conic constant curvature metrics on a closed surface when all cone angles are less than $2\pi$; in particular, we define and study the Teichm\"uller space…

微分几何 · 数学 2015-09-28 Rafe Mazzeo , Hartmut Weiss

In this paper we study the analytic torsion of an odd-dimensional manifold with isolated conical singularities. First we show that the analytic torsion is invariant under deformations of the metric which are of higher order near the…

谱理论 · 数学 2015-02-02 Werner Mueller , Boris Vertman

We present new constructions of Kaehler metrics with constant scalar curvature on complex surfaces, in particular on certain del Pezzo surfaces. Some higher dimensional examples are provided as well.

微分几何 · 数学 2007-05-23 Yann Rollin , Michael A. Singer

In the category of metrics with conical singularities along a smooth divisor with angle in $(0, 2\pi)$, we show that locally defined weak solutions ($C^{1,1}-$solutions) to the K\"ahler-Einstein equations actually possess maximum…

微分几何 · 数学 2014-05-06 Xiuxiong Chen , Yuanqi Wang

We use PDE methods as developed for the Liouville equation to study the existence of conformal metrics with prescribed singularities on surfaces with boundary, the boundary condition being constant geodesic curvature. Our first result shows…

微分几何 · 数学 2007-12-20 Juergen Jost , Guofang Wang , Chunqin Zhou

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…

微分几何 · 数学 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…

代数几何 · 数学 2012-11-30 Gunnar Þór Magnússon