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We show that the existence of constant scalar curvature K\"ahler (cscK) metrics with cone singularities is equivalent to the properness of log $K$-energy. We also prove their equivalence to the geodesic stability. They are extensions of the…

Differential Geometry · Mathematics 2026-01-27 Kai Zheng

We prove an existence result for twisted K\"ahler-Einstein metrics, assuming an appropriate twisted K-stability condition. An improvement over earlier results is that certain non-negative twisting forms are allowed.

Differential Geometry · Mathematics 2019-11-11 Julius Ross , Gábor Székelyhidi

We study the type set of singular measures of fractional type on the Heisenbrg group.

Classical Analysis and ODEs · Mathematics 2017-01-01 Tomás Godoy , Pablo Rocha

In this paper we study a special case of the completion of cusp K\"{a}hler-Einstein metric on the regular part of varieties by taking the continuity method proposed by La Nave and Tian. The differential geometric and algebro-geometric…

Differential Geometry · Mathematics 2017-05-15 Yan Li

Let M=P(E) be a ruled surface. We introduce metrics of finite volume on M whose singularities are parametrized by a parabolic structure over E. Then, we generalise results of Burns--de Bartolomeis and LeBrun, by showing that the existence…

Differential Geometry · Mathematics 2016-09-07 Yann Rollin

We estimate $\delta$-invariants of some singular del Pezzo surfaces with quotient singularities, which we studied ten years ago. As a result, we show that each of these surfaces admits an orbifold K\"ahler--Einstein metric.

Algebraic Geometry · Mathematics 2020-01-22 Ivan Cheltsov , Jihun Park , Constantin Shramov

We are concerned with the Calder\'on inverse inclusion problem, where one intends to recover the shape of an inhomogeneous conductive inclusion embedded in a homogeneous conductivity by the associated boundary measurements. We consider the…

Analysis of PDEs · Mathematics 2021-05-26 Hongyu Liu , Chun-Hsiang Tsou , Wei Yang

In these notes we give an exposition of a result of G. Tian, which says that a Fano surfaces admits a Kahler-Einstein metric precisely when the Lie algebra of holomorphic vector fields is reductive.

Differential Geometry · Mathematics 2012-03-12 Valentino Tosatti

Due to considerable recent interest in the use of density matrices for a wide variety of purposes, including quantum computation, we present a general method for their parameterizations in terms of Euler angles. We assert that this is of…

Quantum Physics · Physics 2009-11-06 Mark S. Byrd , Paul B. Slater

In this paper we study a Kahler structure on finite points. In particular, we study the edge Laplacian of a graph twisted by the Kahler structure introduced in this paper. We also discuss a metric aspect from a twisted holomorphic…

Quantum Algebra · Mathematics 2024-07-17 Soumalya Joardar , Atibur Rahaman

Starting with a compact hyperbolic cone-manifold of dimension n > 2, we study the deformations of the metric in order to get Einstein cone-manifolds. If the singular locus is a closed codimension 2 submanifold and all cone angles are…

Differential Geometry · Mathematics 2016-08-16 Grégoire Montcouquiol

In this paper is to extend the Cheeger-Colding Theory to the class of conic Kahler-Einstein metrics. This extension provides a technical tool for [LTW] in which we prove a version of the Yau-Tian-Donaldson conjecture for Fano varieties with…

Differential Geometry · Mathematics 2018-07-20 Gang Tian , Feng Wang

In this article we introduce the notion of Polyhedral Kahler manifolds, even dimensional polyhedral manifolds with unitary holonomy. We concentrate on the 4-dimensional case, prove that such manifolds are smooth complex surfaces, and…

Differential Geometry · Mathematics 2016-08-04 Dmitri Panov

We give an account of old and new results concerning many types of non-K\"ahler metrics, with focus on the problem of their coexistence on compact complex manifolds, and their behaviour at deformations and blow-up. We also describe a…

Differential Geometry · Mathematics 2025-05-06 Liviu Ornea , Miron Stanciu

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

In this paper, we prove the existence and uniqueness theorem for parabolic conical metrics on Riemann surfaces in the situation of generalized real angles, positive, zero and negative, by complex analysis, and give an example of this…

Differential Geometry · Mathematics 2016-02-02 Santai Qu

Geometrical form of the one-loop divergences induced by conical singularities of background manifolds is studied. To this aim the heat kernel asymptotic expansion on spaces having the structure $C_{\alpha}\times \Sigma$ near singular…

High Energy Physics - Theory · Physics 2009-10-28 Dmitri V. Fursaev

We give sufficient conditions for the existence of Kaehler-Einstein and constant scalar curvature Kaehler (cscK) metrics on finite ramified Galois coverings of a cscK manifold in terms of cohomological conditions on the Kaehler classes and…

Differential Geometry · Mathematics 2021-10-05 Claudio Arezzo , Alberto Della Vedova , Yalong Shi

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

M-theory effects prevent five-dimensional domain-wall and black-hole solutions from developing curvature singularities. While so far this analysis was performed for particular models, we now present a model-independent proof that these…

High Energy Physics - Theory · Physics 2014-11-18 Christoph Mayer , Thomas Mohaupt
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