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We propose a notion of scalar curvature lower bounds in a three-dimensional Riemannian manifold endowed with a $C^0$ metric based on the monotonicity of the Hawking mass along the inverse mean curvature flow. We present a stability theorem…

微分几何 · 数学 2026-05-27 Mattia Fogagnolo , Giorgio Gatti , Alessandra Pluda

In this article, we construct complete embedded constant mean curvature surfaces in $\mb{R}^3$ with freely prescribed genus and any number of ends greater than or equal to four. Heuristically, the surfaces are obtained by resolving finitely…

微分几何 · 数学 2023-09-18 Stephen. J. Kleene

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…

微分几何 · 数学 2016-09-07 Liangming Shen

In a recent paper Donaldson explains how to use an older construction of Joyce to obtain four dimensional local models for scalar-flat Kahler metrics with a 2-torus symmetry. Using this idea, he recovers and generalizes the Taub-NUT metric…

微分几何 · 数学 2011-04-19 Miguel Abreu , Rosa Sena-Dias

This paper presents a method for computing two-dimensional constant mean curvature surfaces. The method in question uses the variational aspect of the problem to implement an efficient algorithm. In principle it is a flow like method in…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Jan Metzger

We introduce a compactification of the space of simple positive divisors on a Riemann surface, as well as a compactification of the universal family of punctured surfaces above this space. These are real manifolds with corners. We then…

微分几何 · 数学 2020-09-02 Rafe Mazzeo , Xuwen Zhu

In this paper we classify certain special ruled surfaces in $\R^3$ under the general theorem of characterization of constant angle surfaces. We study the tangent developable and conical surfaces from the point of view the constant angle…

微分几何 · 数学 2009-04-10 Ana-Irina Nistor

By constructing an ODE through a kind of meromorphic 1-forms, we will give an explicit construction of a kind of conformal metrics of constant curvature on Riemann surfaces with singularities. As an application, we will classify constant…

微分几何 · 数学 2022-04-13 Zhiqiang Wei

Let $X$ be a compact K\"ahler manifold and $S$ a subvariety of $X$ with higher co-dimension. The aim is to study complete constant scalar curvature K\"ahler metrics on non-compact K\"ahler manifold $X-S$ with Poincar\'e--Mok--Yau asymptotic…

微分几何 · 数学 2016-03-31 Jixiang Fu , Shing-Tung Yau , Wubin Zhou

Solving a long-standing open question in convex geometry, we will show that typical convex surfaces contain points of infinite curvature in all tangent directions. To prove this, we use an easy curvature definition imitating the idea of…

度量几何 · 数学 2011-09-13 Karim Adiprasito

We prove the local classification of K\"ahler metrics with constant holomorphic sectional curvature by exploiting the geometry of the bundle of 1-jets of holomorphic functions.

微分几何 · 数学 2025-07-30 Martin de Borbon

In this short note, we use classic computations for K\"ahler-Ricci flow to achieve scalar curvature bound for minimal manifold of general type.

微分几何 · 数学 2008-01-22 Zhou Zhang

In this paper, we show that the complete scalar-flat Kahler metrics constructed by Abreu and the author on strictly unbounded toric 4-dimensional orbifolds have finite $L^2$ norm of the full Riemannian tensor. In particular, this answers a…

微分几何 · 数学 2012-07-24 Rosa Sena-Dias

Let $M=P(E)$ be the complex manifold underlying the total space of the projectivization of a holomorphic vector bundle $E \to \Sigma$ over a compact complex curve $\Sigma$ of genus $\ge 2$. Building on ideas of Fujiki, we prove that $M$…

In this paper we prove that, under natural assumptions, the scalar curvature of a Kaehler-Einstein metric on a compactification of C^n is strictly positive.

微分几何 · 数学 2013-07-11 Claudio Arezzo , Andrea Loi

In this paper we give classification of K\"ahler surfaces of generalized Calabi type.

微分几何 · 数学 2022-11-18 Włodzimierz Jelonek , Ewelina Mulawa

In this paper paraSasakian manifolds with a constant paraholomorphic section curvature are considered.

微分几何 · 数学 2013-07-25 Simeon Zamkovoy

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…

微分几何 · 数学 2023-11-07 Reza Seyyedali

In this manuscript we study natural symmetries of Kaehler manifolds: constant holomorphic sectional curvature Kaheler manifolds, semisymmetric Kaehler manifolds and holomorphically pseudosymmetric Kaehler manifolds. We get characterization…

微分几何 · 数学 2024-02-08 Alma L. Albujer , Jorge Alcázar , Magdalena Caballero

We give a full classification of complete rotationally invariant surfaces with constant Gauss curvature in Berger spheres: they are either Clifford tori, which are flat, or spheres of Gauss curvature $K \geq K_0$ for a positive constant…

微分几何 · 数学 2019-12-06 Francisco Torralbo , Joeri Van der Veken