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In this paper we establish a positive lower bound estimate for the second smallest eigenvalue of the complex Hessian of solutions to a degenerate complex Monge-Amp\`ere equation. As a consequence, we find that in the space of K\"ahler…

微分几何 · 数学 2026-03-31 Jingchen Hu

Suppose $(X,\omega)$ is a compact K\"ahler manifold of dimension $n$, and $\theta$ is closed $(1,1)$-form representing a big cohomology class. We introduce a metric $d_1$ on the finite energy space $\mathcal{E}^1(X,\theta)$, making it a…

微分几何 · 数学 2023-09-19 Tamás Darvas , Eleonora Di Nezza , Chinh H. Lu

Suppose that a polarised K\"ahler manifold $(X,L)$ admits an extremal metric $\omega$. We prove that there exists a sequence of K\"ahler metrics $\{ \omega_k \}_k$, converging to $\omega$ as $k \to \infty$, each of which satisfies the…

微分几何 · 数学 2020-03-09 Yoshinori Hashimoto

Suppose (X,\omega) is a compact K\"ahler manifold. In the present work we propose a simple construction for weak geodesic rays in the space of K\"ahler metrics that seems to be tied together with properties of the class E(X,\omega). As an…

复变函数 · 数学 2017-12-15 Tamás Darvas

We present an algebro-geometric proof of the K-semistability of the projective plane.

代数几何 · 数学 2016-08-24 Jihun Park , Joonyeong Won

Solutions to vacuum Einstein field equations with cosmological constant, such as the de Sitter space and the anti-de Sitter space, are basic in different cosmological and theoretical developments. It is also well known that complex…

高能物理 - 理论 · 物理学 2022-03-23 Carlos G. Boiza , Jose A. R. Cembranos

We study algebro-geometric consequences of the quantised extremal K\"ahler metrics, introduced in the previous work of the author. We prove that the existence of quantised extremal metrics implies weak relative Chow polystability. As a…

代数几何 · 数学 2019-08-22 Yoshinori Hashimoto

With inspiration from the K\"ahler geometry, we introduce a metric structure on the energy class, $\mathcal{E}_{1,m}$, of $m$-subharmonic functions with bounded energy and show that it is complete. After studying how the metric convergence…

复变函数 · 数学 2021-10-07 Per Ahag , Rafal Czyz

In this paper we address the following question regarding the regularity of geodesics in the space of K\"ahler potentials. Given a geodesic which is highly regular, and has smooth boundary value, can we expect that it is actually smooth? We…

偏微分方程分析 · 数学 2019-03-19 Jingchen Hu

In this paper we explore the connection between special degenerations of algebraic manifolds and geodesics in the space of Kahler metrics. We provide a new and general geometric construction of nontrivial solutions for the geodesic…

微分几何 · 数学 2007-05-23 Claudio Arezzo , Gang Tian

This paper is a short version of the author habilitation thesis. The main results have been already published but here a lot of details are clarified. As well we add some new results: we discuss some quasi classical limit of ALG(a) -…

代数几何 · 数学 2007-05-23 Nikolay A. Tyurin

We show that, given $k> 4$, $0<J<\min\{{1\over 4},{k-4\over 4}\}$, any point in space of non-degenerate smooth K\"ahler potentials has a small neighborhood with respect to $C^k$ norm, s.t. any two points in this neighborhood can be…

偏微分方程分析 · 数学 2019-04-09 Xiuxiong Chen , Mikhail Feldman , Jingchen Hu

In this paper we study K-polystability of arbitrary (possibly non-projective) compact K\"ahler manifolds admitting holomorphic vector fields. As a main result, we show that existence of a constant scalar curvature K\"ahler (cscK) metric…

微分几何 · 数学 2017-12-19 Zakarias Sjöström Dyrefelt

We classify compact K\"ahler surfaces with nonconstant Killing potentials such that all integral curves of their gradients are reparametrized geodesics.

微分几何 · 数学 2013-09-11 Andrzej Derdzinski

We introduce a distance in the space of fully-supported probability measures on one-dimensional symbolic spaces. We compare this distance to the $\bar{d}$-distance and we prove that in general they are not comparable. Our projective…

动力系统 · 数学 2015-03-04 Liliana Trejo-Valencia , Edgardo Ugalde

We study a problem of the geometric quantization for the quaternion projective space. First we explain a Kaehler structure on the punctured cotangent bundle of the quaternion projective space, whose Kaehler form coincides with the natural…

微分几何 · 数学 2007-05-23 Kenro Furutani

We calculate the K\"ahler potential for the Samols metric on the moduli space of Abelian Higgs vortices on $\mathbbm{R}^{2}$, in two different ways. The first uses a scaling argument. The second is related to the Polyakov conjecture in…

高能物理 - 理论 · 物理学 2009-11-10 Heng-Yu Chen , N. S. Manton

Given two c-projectively equivalent metrics on a K\"ahler manifold we show that the canoncially constructed, Poisson-commuting integrals of motion of the geodesic flow, linear and quadratic in momenta, also commute as quantum operators. The…

微分几何 · 数学 2021-03-17 Jan Schumm

We prove that locally any hyper-K\"ahler metric with torsion admits an HKT potential.

微分几何 · 数学 2009-11-10 Bertrand Banos , Andrew Swann

It has been shown that the Cauchy problem for geodesics in the space of K\"ahler metrics with a fixed cohomology class on a compact complex manifold $M$ can be effectively reduced to the problem of finding the flow of a related hamiltonian…

辛几何 · 数学 2019-09-10 José Mourão , João P. Nunes , Tomás Reis