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We show that a general class of singular K\"ahler metrics with Ricci curvature bounded below define K\"ahler currents. In particular the result applies to singular K\"ahler-Einstein metrics on klt pairs, and an analogous result holds for…

Differential Geometry · Mathematics 2025-02-17 Yifan Chen , Shih-Kai Chiu , Max Hallgren , Gábor Székelyhidi , Tat Dat Tô , Freid Tong

We study the existence of extremal K\"ahler metrics on K\"ahler manifolds. After introducing a notion of relative K-stability for K\"ahler manifolds, we prove that K\"ahler manifolds admitting extremal K\"ahler metrics are relatively…

Differential Geometry · Mathematics 2017-09-04 Ruadhaí Dervan

We consider the K\"ahler-Ricci flow on compact K\"ahler manifolds with semiample canonical bundle and intermediate Kodaira dimension, and show that the flow collapses to a canonical metric on the base of the Iitaka fibration in the locally…

Differential Geometry · Mathematics 2025-05-21 Hans-Joachim Hein , Man-Chun Lee , Valentino Tosatti

We show that on smooth minimal surfaces of general type, the K\"ahler-Ricci flow starting at any initial K\"ahler metric converges in the Gromov-Hausdorff sense to a K\"ahler-Einstein orbifold surface. In particular, the diameter of the…

Differential Geometry · Mathematics 2018-12-14 Bin Guo , Jian Song , Ben Weinkove

Let $D$ be a smooth divisor in a compact complex manifold $X$ and let $\beta \in (0,1)$. We show that in any positive co-homology class on $X$ there is a K\"ahler metric with cone angle $2\pi\beta$ along $D$ which has bounded Ricci…

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

In 1978, Yau confirmed a conjecture due to Calabi stating the existence of K\"ahler metrics with prescribed Ricci forms on compact K\"ahler manifolds. A version of this statement for effective orbifolds can be found in the literature. In…

Complex Variables · Mathematics 2017-11-01 Mitchell Faulk

In their seminal work (\cite{CC}, \cite{CC2}), Chen and Cheng proved apriori estimates for the constant scalar curvature metrics on compact K\"ahler manifolds. They also proved $C^{3,\alpha}$ estimate for the potential of the \ka metrics…

Differential Geometry · Mathematics 2023-11-07 Reza Seyyedali

This is the first paper in a series to develop a linear and nonlinear theory for elliptic and parabolic equations on K\"ahler varieties with mild singularities. Donaldson has established a Schauder estimate for linear and complex…

Differential Geometry · Mathematics 2016-12-02 Bin Guo , Jian Song

We adapt the PDE approach of Guo-Phong-Tong and Guo-Phong-Tong-Wang [17, 18] to prove an $L^\infty$ estimate for transverse complex Monge-Amp\`ere equations on homologically orientable transverse K\"ahler manifolds. As an application, we…

Differential Geometry · Mathematics 2023-12-27 Sivaram P

In this paper, we will establish a regularity theory for the K\"ahler-Ricci flow on Fano $n$-manifolds with Ricci curvature bounded in $L^p$-norm for some $p > n$. Using this regularity theory, we will also solve a long-standing conjecture…

Differential Geometry · Mathematics 2013-10-23 Gang Tian , Zhenlei Zhang

We study adiabatic limits of Ricci-flat Kahler metrics on a Calabi-Yau manifold which is the total space of a holomorphic fibration when the volume of the fibers goes to zero. By establishing some new a priori estimates for the relevant…

Differential Geometry · Mathematics 2018-04-19 Valentino Tosatti

In this paper we prove localised weighted curvature integral estimates for solutions to the Ricci flow in the setting of a smooth four dimensional Ricci flow or a closed $n$-dimensional K\"ahler Ricci flow. These integral estimates improve…

Differential Geometry · Mathematics 2025-03-31 Jiawei Liu , Miles Simon

We consider noncompact complete K\"ahler manifolds with nonnegative bisectional curvature. Our main results are: 1. Precise relations among refined minimal degree of polynomial growth holomorphic functions and holomorphic volume forms,…

Differential Geometry · Mathematics 2026-04-28 Yuang Shi

In this paper, we first prove a folklore conjecture on a greatest lower bound of the Calabi energy in all K\"ahler manifold. Similar result in algebriac setting was obtained by S. K. Donaldson. Secondly, we give an upper/lower bound…

Differential Geometry · Mathematics 2007-05-23 X. X. Chen

We prove uniform gradient and diameter estimates for a family of geometric complex Monge-Ampere equations. Such estimates can be applied to study geometric regularity of singular solutions of complex Monge-Ampere equations. We also prove a…

Differential Geometry · Mathematics 2017-06-07 Xin Fu , Bin Guo , Jian Song

We establish the existence of K\"ahler-Ricci flow on pseudoconvex domains with general initial metric without curvature bounds. Moreover we prove that this flow is simultaneously complete, and its normalized version converge to the complete…

Differential Geometry · Mathematics 2018-03-28 Huabin Ge , Aijin Lin , Liangming Shen

We study the Navier-Stokes and Euler equations of incompressible hydrodynamics in two and three spatial dimensions and show how the constraint of incompressiblility leads to equations of Monge--Amp\`ere type for the stream function, when…

Exactly Solvable and Integrable Systems · Physics 2007-05-23 Ian Roulstone , Bertrand Banos , John D. Gibbon , Vladimir Roubtsov

In this paper, we study several types of geometric problems related to the Ricci curvature on noncompact complex manifolds, such as the existence of K\"{a}hler-Einstein metrics on complete K\"{a}hler manifolds with negative Ricci curvature,…

Differential Geometry · Mathematics 2026-04-22 Hanzhang Yin

We prove a relative $L^\infty$ estimate for a class of complex Monge-Amp\`ere type equations on K\"ahler manifolds. It provides a unified approach to Tundinger type estimate and uniform estimate. It also improves the previous results about…

Differential Geometry · Mathematics 2024-10-08 Junbang Liu

We study the long-time behavior of the Kahler-Ricci flow on compact Kahler manifolds. We give an almost complete classification of the singularity type of the flow at infinity, depending only on the underlying complex structure. If the…

Differential Geometry · Mathematics 2017-01-03 Valentino Tosatti , Yuguang Zhang