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We construct Kahler-Einstein metrics with negative scalar curvature near an isolated log canonical (non-log terminal) singularity. Such metrics are complete near the singularity if the underlying space has complex dimension 2 or if the…

Differential Geometry · Mathematics 2022-12-22 Ved Datar , Xin Fu , Jian Song

We establish the optimal upper bounds for cone angles of K\"ahler-Einstein metrics with conical singularities along smooth anticanonical divisors on smooth K-unstable del Pezzo surfaces.

Algebraic Geometry · Mathematics 2025-09-11 Dasol Jeong , Jihun Park

We prove that the existence of constant scalar curvature K\"ahler metrics with cone singularities along a divisor implies log $K$-polystability and $G$-uniform log $K$-stability, where $G$ is the automorphism group which preserves the…

Differential Geometry · Mathematics 2025-10-21 Takahiro Aoi , Yoshinori Hashimoto , Kai Zheng

We prove a regularity result for Monge-Amp\`ere equations degenerate along smooth divisor on Kaehler manifolds in Donaldson's spaces of $\beta$-weighted functions. We apply this result to study the curvature of Kaehler metrics with conical…

Differential Geometry · Mathematics 2019-09-12 Claudio Arezzo , Alberto Della Vedova , Gabriele La Nave

In this paper we introduce the "interpolation-degneration" strategy to study Kahler-Einstein metrics on a smooth Fano manifold with cone singularities along a smooth divisor that is proportional to the anti-canonical divisor. By…

Differential Geometry · Mathematics 2012-10-09 Chi Li , Song Sun

Using an ansatz due to LeBrun we construct complete scalar-flat K\"ahler metrics with a prescribed varying conical singularity along a divisor.

Differential Geometry · Mathematics 2024-01-01 Gonçalo Oliveira , Rosa Sena-Dias

Let $X$ be a compact K\"ahler manifold and $D$ be a simple normal crossing divisor on $X$ such that $K_X+D$ is big and nef. We first prove that the singular K\"ahler--Einstein metric constructed by Berman--Guenancia is almost-complete on $X…

Differential Geometry · Mathematics 2025-04-29 Quang-Tuan Dang , Duc-Viet Vu

We prove an existence theorem for Asymptotically Conical Ricci Flat Kahler metrics in $\mathbb{C}^2$ with cone singularities along a smooth complex curve. These metrics are expected to arise as blow up limits of non collapsed sequences of…

Differential Geometry · Mathematics 2021-10-26 Martin de Borbon

The existence of \emph{weak conical K\"ahler-Einstein} metrics along smooth hypersurfaces with angle between $0$ and $2\pi$ is obtained by studying a smooth continuity method and a \emph{local Moser's iteration} technique. In the case of…

Differential Geometry · Mathematics 2013-08-21 Chengjian Yao

We prove that a complete K\"ahler manifold with holomorphic curvature bounded between two negative constants admits a unique complete K\"ahler-Einstein metric. We also show this metric and the Kobayashi-Royden metric are both uniformly…

Differential Geometry · Mathematics 2017-11-28 Damin Wu , Shing-Tung Yau

We apply Tian's method in Kahler-Einstein problem to prove that a conic K\''ahler metric with lower Ricci curvature bound can be approximated by smooth K\''ahler metrics with the same lower Ricci curvature bound. Furthermore, conic…

Differential Geometry · Mathematics 2016-09-07 Liangming Shen

We show that any toric K\"ahler cone with smooth compact cross-section admits a family of Calabi-Yau cone metrics with conical singularities along its toric divisors. The family is parametrized by the Reeb cone and the angles are given…

Differential Geometry · Mathematics 2020-05-08 Martin de Borbon , Eveline Legendre

In this short note we are concerned with the Kahler-Einstein metrics near cone type log canonical singularities. By two different approaches, we construct a complete Kahler-Einstein metric with negative scalar curvature in a neighborhood of…

Differential Geometry · Mathematics 2018-10-23 Hanlong Fang , Xin Fu

Let $X$ be a Fano manifold of dimension at least $2$ and $D$ be a smooth divisor in a multiple of the anticanonical class, $\frac1\alpha(-K_X)$ with $\alpha>1$. It is well-known that K\"ahler-Einstein metrics on $X$ with conic singularities…

Differential Geometry · Mathematics 2026-01-21 Olivier Biquard , Henri Guenancia

This is the second of a series of three papers which provide proofs of results announced in arXiv:1210.7494. In this paper we consider the Gromov-Hausdorff limits of metrics with cone singularities in the case when the limiting cone angle…

Differential Geometry · Mathematics 2012-12-20 Xiuxiong Chen , Simon Donaldson , Song Sun

We solve for the SO(3)-invariant Kahler-Einstein metric on $\mathbb{P}^2$ with cone singularities along a smooth conic curve using numerical approach. The numerical results show the sharp range of angles ($(\pi/2,2\pi]$) for the solvability…

Differential Geometry · Mathematics 2013-05-28 Chi Li

We develop estimates for the equation of scalar curvature of singular metrics with cone angle $\beta>1$, in a big and semi-positive cohomology class on a K\"ahler manifold. We further derive the Laplacian estimate for the scalar curvature…

Differential Geometry · Mathematics 2022-05-31 Kai Zheng

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 $\mu=f\omega^n$…

Algebraic Geometry · Mathematics 2008-09-24 Philippe Eyssidieux , Vincent Guedj , Ahmed Zeriahi

In this paper we prove that the K\"{a}hler-Einstein metrics for a degeneration family of K\"{a}hler manifolds with ample canonical bundles Gromov-Hausdorff converge to the complete K\"{a}hler-Einstein metric on the smooth part of the…

Differential Geometry · Mathematics 2016-09-07 Wei-Dong Ruan

The property of admitting an astheno-K\"ahler metric is not stable under the action of small deformations of the complex structure of a compact complex manifold. In this paper, we prove necessary cohomological conditions for the existence…

Differential Geometry · Mathematics 2023-05-08 Tommaso Sferruzza