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In this article, we study a locally constrained fully nonlinear curvature flow for convex capillary hypersurfaces in half-space. We prove that the flow preserves the convexity, exists for all time, and converges smoothly to a spherical cap.…

偏微分方程分析 · 数学 2025-02-20 Xinqun Mei , Liangjun Weng

This paper is dedicated to the local parametric classification of Wintgen ideal submanifolds in space forms. These submanifolds are characterized by the pointwise attainment of equality in the DDVV inequality, which relates the scalar…

微分几何 · 数学 2025-05-02 Marcos Dajczer , Theodoros Vlachos

In this paper, we establish a Heintze-Karcher type inequality for hypersurfaces with capillary boundary of contact angle $\theta\in (0,\frac{\pi}{2})$ in a half space or a half ball, by using solution to a mixed boundary value problem in…

微分几何 · 数学 2024-05-09 Xiaohan Jia , Chao Xia , Xuwen Zhang

We show that the Penrose inequality is satisfied for a class of conformally flat axially symmetric nonmaximal perturbations of the Schwarzschild data. A role of horizon is played by a marginally outer trapped surface which does not have to…

广义相对论与量子宇宙学 · 物理学 2020-05-19 Jarosław Kopiński , Jacek Tafel

The existence of nontrivial cup products or Massey products in the cohomology of a manifold leads to inequalities of systolic type, but in general such inequalities are not optimal (tight). Gromov proved an {optimal} systolic inequality for…

微分几何 · 数学 2024-07-08 Thomas G. Goodwillie , James J. Hebda , Mikhail G. Katz

The positive mass theorem is one of the fundamental results in general relativity. It states that, assuming the dominant energy condition, the total mass of an asymptotically flat spacetime is non-negative. The Penrose inequality provides a…

微分几何 · 数学 2018-10-25 Po-Ning Chen

We prove gradient estimates for hypersurfaces in the hyperbolic space $\mathbb{H}^{n+1},$ expanding by negative powers of a certain class of homogeneous curvature functions. We obtain optimal gradient estimates for hypersurfaces evolving by…

微分几何 · 数学 2015-05-21 Julian Scheuer

We prove local and global upper estimates for the infimum of the mean curvature, the scalar curvature and the norm of the shape operator of graphs in a warped product space. Using these estimates, we obtain some results on pseudo-hyperbolic…

微分几何 · 数学 2020-11-05 Alexandre Paiva Barreto , Fabiani A. Coswosck , Luiz Hartmann

We prove a version the Penrose inequality for black hole space-times which are perturbations of the Schwarzschild exterior in a slab around a null hypersurface $\underline{\mathcal{N}}_0$. $\underline{\mathcal{N}}_0$ terminates at past null…

广义相对论与量子宇宙学 · 物理学 2015-06-23 Spyros Alexakis

We study the asymptotic Dirichlet problem for A-harmonic equations and for the minimal graph equation on a Cartan-Hadamard manifold M whose sectional curvatures are bounded from below and above by certain functions depending on the distance…

微分几何 · 数学 2019-10-10 Jean-Baptiste Casteras , Ilkka Holopainen , Jaime B. Ripoll

Let G be a k-step Carnot group. We prove an isoperimetric-type inequality for compact C^2-smooth immersed hypersurfaces with boundary, involving the horizontal mean curvature of the hypersurface. This generalizes an inequality due to…

微分几何 · 数学 2012-12-17 Francescopaolo Montefalcone

In this note, we estimate the upper bound of volume of closed positively or nonnegatively curved Alexandrov space $X$ with strictly convex boundary. We also discuss the equality case. In particular, the Boundary Conjecture holds when the…

微分几何 · 数学 2020-10-23 Jian Ge

We develop an Aleksandrov reflection framework for a large class of expanding curvature flows in hyperbolic space, with inverse mean curvature flow serving as a model case. The method applies to the level-set formulation of the flow. As a…

微分几何 · 数学 2026-02-13 Theodora Bourni , José M. Espinar , Aakash Mishra

Mixed volumes in $n$-dimensional Euclidean space are functionals of $n$-tuples consisting of convex bodies $K,L,C_1,\ldots,C_{n-2}$. The Alexandrov--Fenchel inequalities are fundamental inequalities between mixed volumes of convex bodies,…

度量几何 · 数学 2023-10-02 Daniel Hug , Paul A. Reichert

In this paper, we prove Heintze-Karcher type inequalities involving the shifted mean curvature for smooth bounded domains in certain sub-static warped product manifolds. In particular, we prove a Heintze-Karcher-type inequality for non…

微分几何 · 数学 2025-04-22 Haizhong Li , Yong Wei , Botong Xu

We prove new lossless Strichartz and spectral projection estimates on asymptotically hyperbolic surfaces, and, in particular, on all convex cocompact hyperbolic surfaces. In order to do this, we also obtain log-scale lossless Strichartz and…

偏微分方程分析 · 数学 2026-02-09 Xiaoqi Huang , Christopher D. Sogge , Zhongkai Tao , Zhexing Zhang

In this paper, we first study the locally constrained curvature flow of hypersurfaces in hyperbolic space, which was introduced by Brendle, Guan and Li [7]. This flow preserves the $m$th quermassintegral and decreases $(m+1)$th…

微分几何 · 数学 2023-08-11 Yingxiang Hu , Haizhong Li , Yong Wei

We provide a new proof of the Riemannian Penrose inequality for time-symmetric asymptotically flat initial data with a single black-hole horizon. The proof proceeds through a newly established monotonicity formula holding along the level…

We study the properties of the loosely trapped surface (LTS) and the dynamically transversely trapping surface (DTTS) in Einstein-Maxwell systems. These concepts of surfaces were proposed by the four of the present authors in order to…

广义相对论与量子宇宙学 · 物理学 2020-07-09 Kangjae Lee , Tetsuya Shiromizu , Hirotaka Yoshino , Keisuke Izumi , Yoshimune Tomikawa

We give a holographic argument in favor of the AdS Penrose inequality, which conjectures a lower bound on the total mass in terms of the area of apparent horizons. This inequality is often viewed as a test of cosmic censorship. We further…

高能物理 - 理论 · 物理学 2019-06-19 Netta Engelhardt , Gary T. Horowitz