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We prove that if $(M,g)$ is a topological 3-ball with a $C^4$-smooth Riemannian metric $g$, and mean-convex boundary $\partial M$ then knowledge of least areas circumscribed by simple closed curves $\gamma \subset \partial M$ uniquely…

微分几何 · 数学 2021-03-26 Spyros Alexakis , Tracey Balehowsky , Adrian Nachman

Let $m\in\mathbb{N},$ $m\geq 2,$ and let $\{p_j\}_{j=1}^m$ be a finite subset of $\mathbb{S}^2$ such that $0\in\mathbb{R}^3$ lies in its positive convex hull. In this paper we make use of the classical Minkowski problem, to show the…

微分几何 · 数学 2013-02-19 Antonio Alarcon , Rabah Souam

We obtain an estimate from below for the remainder in Weyl's law on negatively curved surfaces. In the constant curvature case, such a bound was proved independently by Hejhal and Randol in 1976 using the Selberg zeta function techniques.…

谱理论 · 数学 2011-11-09 Dmitry Jakobson , Iosif Polterovich , John A. Toth

In this paper, we investigate Hessian curvature hypersurfaces with prescribed Gauss images. Given geodesically strictly convex bounded domains $\Omega$ in $\mathbb{R}^n$ and $\tilde{\Omega}$ in the unit hemisphere, we prove that there is a…

微分几何 · 数学 2024-12-13 Huang Rongli , Qu Changzheng , Wang Zhizhang , Wo Weifeng

We derive optimal estimates for the Bergman kernel and the Bergman metric for certain model domains in $\mathbb{C}^2$ near boundary points that are of infinite type. Being unbounded models, these domains obey certain geometric constraints…

复变函数 · 数学 2021-03-25 Gautam Bharali

Let M be a compact hyperbolic manifold with totally geodesic boundary. If the injectivity radius of the boundary is larger than an explicit function of the normal injectivity radius of the boundary, we show that there is a negatively curved…

几何拓扑 · 数学 2026-01-27 Colby Kelln , Jason Manning

We prove that finite perimeter subsets of $\mathbb{R}^{n+1}$ with small isoperimetric deficit have boundary Hausdorff-close to a sphere up to a subset of small measure. We also refine this closeness under some additional a priori integral…

微分几何 · 数学 2017-03-09 Erwann Aubry , Jean-François Grosjean

In this article, we provide a definitive well-posedness theory for the free boundary problem in incompressible magnetohyrodynamics. Despite the clear physical interest in this system and the remarkable progress in the study of the free…

偏微分方程分析 · 数学 2024-12-23 Mihaela Ifrim , Ben Pineau , Daniel Tataru , Mitchell A. Taylor

We justify the Weyl asymptotic formula for the eigenvalues of the Poincar\'e-Steklov spectral problem for a domain bounded by a Lipschitz surface.

谱理论 · 数学 2023-09-12 Grigori Rozenblum

The purpose of this article is to investigate the boundary behaviour of the Kobayashi--Fuks metric and several associated invariants on strictly pseudoconvex domains in the paradigm of scaling. This approach allows us to examine more…

复变函数 · 数学 2025-01-23 Anjali Bhatnagar

In this note we shall prove that the complete K\"{a}hler-Einstein volume form on a bounded strongly pseudoconvex domain with $C^{\infty}$-boundary is the normalized limit of a sequence of Bergman kernels.

复变函数 · 数学 2013-12-10 Hajime Tsuji

In this note, we extend the main results of our paper on quasilinearization and curvature of Aleksandrov spaces of curvature $\leq0$ to curvature bounds other than $0$. For non-zero $K$, we employ the previously introduced notion of the…

度量几何 · 数学 2015-12-08 I. D. Berg , Igor G. Nikolaev

A topological constraint on the possible values of the universal quantization parameter is revealed in the case of geometric quantization on (boundary) curves diffeomorphic to $S^1$, analytically extended on a bounded domain in…

数学物理 · 物理学 2014-12-25 Razvan Teodorescu

In this note, we prove that the infimum of the mean curvature on any disconnected boundary component of an unbounded mean convex domain in $\mathbb{R}^n$ must be zero.

微分几何 · 数学 2026-05-19 Jian Ge

The Rolling Ball Theorem asserts that given a convex body K in Euclidean space and having a smooth surface bd(K) with all principal curvatures not exceeding c>0 at all boundary points, K necessarily has the property that to each boundary…

微分几何 · 数学 2009-03-30 Sz. Gy. Re've'sz

We show that an enlargeable Riemannian metric on a (possibly nonspin) manifold cannot have uniformly positive scalar curvature. This extends a well-known result of Gromov and Lawson to the nonspin setting. We also prove that every…

几何拓扑 · 数学 2021-01-01 Simone Cecchini , Thomas Schick

We consider the initial-boundary value problem in the halfspace for the system of equations of ideal Magneto-Hydrodynamics with a perfectly conducting wall boundary condition. We show the convergence of solutions to the solution of the…

偏微分方程分析 · 数学 2024-07-04 Paolo Secchi

A bounded domain $K \subset \mathbb R^n$ is called polynomially integrable if the $(n-1)$-dimensional volume of the intersection $K$ with a hyperplane $\Pi$ polynomially depends on the distance from $\Pi$ to the origin. It was proved in [7]…

泛函分析 · 数学 2022-11-24 Mark Agranovsky , Alexander Koldobsky , Dmitry Ryabogin , Vladyslav Yaskin

Let $S$ be the 2-sphere and $V \subset S$ be a finite set of at least three points. We show that for each function $\kappa: V \rightarrow (0, 2\pi)$ satisfying elementary necessary conditions, in each discrete conformal class of spherical…

度量几何 · 数学 2023-11-30 Ivan Izmestiev , Roman Prosanov , Tianqi Wu

In this paper, we study the compactness of a boundary value problem for hyperkaehler 4-manifolds. We show that under certain topological conditions and the positive mean curvature condition on the boundary, a sequence of hyperkaehler…

微分几何 · 数学 2022-02-16 Hongyi Liu