English
Related papers

Related papers: Extremal K\"ahler metrics

200 papers

We prove that the twisted Kahler-Einstein metrics that arise on the base of certain holomorphic fiber space with Calabi-Yau fibers have conical-type singularities along the discriminant locus. These fiber spaces arise naturally when…

Differential Geometry · Mathematics 2020-11-24 Mark Gross , Valentino Tosatti , Yuguang Zhang

We show that a compact weighted extremal Kahler manifold (as defined by the third named author) has coercive weighted Mabuchi energy with respect to a maximal complex torus in the reduced group of complex automorphisms. This provides a vast…

Differential Geometry · Mathematics 2023-11-22 Vestislav Apostolov , Simon Jubert , Abdellah Lahdili

Geometric (also known as spatial) quantiles, introduced by Chaudhury and representing one of the three principal approaches to defining multivariate quantiles, have been well studied in the literature. In this work, we focus on the extremal…

Statistics Theory · Mathematics 2026-03-05 Sibsankar Singha , Marie Kratz , Sreekar Vadlamani

From the work of Dervan-Keller, there exists a quantization of the critical equation for the J-flow. This leads to the notion of J-balanced metrics. We prove that the existence of J-balanced metrics has a purely algebro-geometric…

Algebraic Geometry · Mathematics 2017-07-05 Yoshinori Hashimoto , Julien Keller

We discuss a conjecture of Donaldson on a version of Yau's Theorem for symplectic forms with compatible almost complex structures and survey some recent progress on this problem. We also speculate on some future possible directions, and use…

Differential Geometry · Mathematics 2011-07-06 Valentino Tosatti , Ben Weinkove

We use a generalization of the Gibbons-Hawking ansatz to study the behavior of certain non-compact Calabi-Yau manifolds in the large complex structure limit. This analysis provides an intermediate step toward proving the metric collapse…

Differential Geometry · Mathematics 2007-05-23 Ilia Zharkov

In this paper, we discuss the relative $K$-stability and the modified $K$-energy associated to the Calabi's extremal metric on toric manifolds. We give a sufficient condition in the sense of convex polytopes associated to toric manifolds…

Differential Geometry · Mathematics 2007-05-23 Bin Zhou , Xiaohua Zhu

We construct new explicit toric scalar-flat K{\"a}hler ALE metrics on weighted projective spaces of non-compact type, which we use to obtain smooth extremal K{\"a}hler metrics on appropriate resolutions of orbifolds. In particular, we…

Differential Geometry · Mathematics 2016-03-25 Vestislav Apostolov , Yann Rollin

In this paper, we make progress on understanding the collapsing behavior of Calabi-Yau metrics on a degenerating family of polarized Calabi-Yau manifolds. In the case of a family of smooth Calabi-Yau hypersurfaces in projective space…

Differential Geometry · Mathematics 2024-09-13 Song Sun , Ruobing Zhang

Let recall that the term 'k-th extreme' was introduced in a limiting sense. That is, if $X_{r:n}$ denote the r-th order statistic then for fix k, as $n\to\infty$, $X_{n-k+1:n}$ is called the k-th extremes or k-th largest order statistics.…

Statistics Theory · Mathematics 2024-07-17 Ali Saeb

We show that if a Fano manifold $M$ is K-stable with respect to special degenerations equivariant under a compact group of automorphisms, then $M$ admits a K\"ahler-Einstein metric. This is a strengthening of the solution of the…

Differential Geometry · Mathematics 2015-06-25 Ved Datar , Gábor Székelyhidi

Recently, Donaldson proved asymptotic stability for a polarized algebraic manifold $M$ with polarization class admitting a K\"ahler metric of constant scalar curvature, essentially when the linear algebraic part $H$ of $Aut^0(M)$ is…

Differential Geometry · Mathematics 2009-11-10 Toshiki Mabuchi

In the present paper and the companion paper [9] a probabilistic (statistical-mechanical) approach to the construction of canonical metrics on a complex algebraic varieties X is introduced, by sampling "temperature deformed" determinantal…

Mathematical Physics · Physics 2017-08-02 Robert J. Berman

In a previous paper, the authors introduced several vector space norms on the space of algebraic numbers modulo torsion which corresponded to the Mahler measure on a certain class of numbers and allowed the authors to formulate L^p Lehmer…

Number Theory · Mathematics 2010-06-30 Paul Fili , Zachary Miner

This article is concerned with an observation for proving non-existence of canonical Kahler metrics. The idea is to use a rather explicit type of degeneration that applies in many situations. Namely, in a variation on a theme introduced by…

Algebraic Geometry · Mathematics 2024-11-21 Ivan A. Cheltsov , Yanir A. Rubinstein

Diameter estimates for K\"ahler metrics are established which require only an entropy bound and no lower bound on the Ricci curvature. The proof builds on recent PDE techniques for $L^\infty$ estimates for the Monge-Amp\`ere equation, with…

Differential Geometry · Mathematics 2022-09-21 Bin Guo , Duong H. Phong , Jian Song , Jacob Sturm

Let $\text{Bl}_{\mathbb{P}^1} \mathbb{P}^n$ be a K\"ahler manifold obtained by blowing up a complex projective space $\mathbb{P}^n$ along a line $\mathbb{P}^1$. We prove that $\text{Bl}_{\mathbb{P}^1} \mathbb{P}^n$ does not admit constant…

Differential Geometry · Mathematics 2017-11-21 Yoshinori Hashimoto

This paper, the second of a series, deals with the function space of all smooth K\"ahler metrics in any given closed complex manifold $M$ in a fixed cohomology class. The previous result of the second author \cite{chen991} showed that the…

Differential Geometry · Mathematics 2007-05-23 E. Calabi , X. X. Chen

We prove that on a K\"ahler manifold admitting an extremal metric $\omega$ and for any K\"ahler potential $\varphi_0$ close to $\omega$, the Calabi flow starting at $\varphi_0$ exists for all time and the modified Calabi flow starting at…

Differential Geometry · Mathematics 2015-01-05 Hongnian Huang , Kai Zheng

The statistical modelling of spatial extremes has recently made major advances. Much of its focus so far has been on the modelling of the magnitudes of extreme events but little attention has been paid on the timing of extremes. To address…

Statistics Theory · Mathematics 2015-03-20 Clément Dombry , Mathieu Ribatet , Stilian Stoev