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We present a method of obtaining a lower bound estimate of the curvatures of the Bergman metric without using the regularity of the kernel function on the boundary. As an application, we prove the existence of an uniform lower bound of the…

Complex Variables · Mathematics 2020-12-02 Sungmin Yoo

Using some resolution of singularities and oscillatory integral methods in conjunction with appropriate damping and interpolation techniques, L^p boundedness theorems for p > 2 are obtained for maximal operators over a wide range of…

Classical Analysis and ODEs · Mathematics 2010-02-07 Michael Greenblatt

A new isoperimetric estimate is proved for embedded closed curves evolving by curve shortening flow, normalized to have total length $2\pi$. The estimate bounds the length of any chord from below in terms of the arc length between its…

Differential Geometry · Mathematics 2009-08-20 Ben Andrews , Paul Bryan

We show that small perturbations of the metric of a ball in Euclidean n-space to metrics with nonpositive curvature do not reduce the isoperimetric ratio. Furthermore, the isoperimetric ratio is preserved only if the perturbation…

Differential Geometry · Mathematics 2026-02-20 Mohammad Ghomi , John Ioannis Stavroulakis

The classical isoperimetric inequality can be extended to a general normed plane. In the Euclidean plane, the defect in the isoperimetric inequality can be calculated in terms of the signed areas of some singular sets. In this paper we…

Metric Geometry · Mathematics 2020-10-23 Rafael Segadas dos Santos , Marcos Craizer

This note concerns the area growth and bottom spectrum of complete stable minimal surfaces in a three-dimensional manifold with scalar curvature bounded from below. When the ambient manifold is the Euclidean space, by an elementary…

Differential Geometry · Mathematics 2022-05-04 Ovidiu Munteanu , Chiung-Jue Anna Sung , Jiaping Wang

In this article we prove the measure stability for all 2-dimensional Almgren minimal cones in $\mathbb{R}^n$, and the Almgren (resp. topological) sliding stability for the 2-dimensional Almgren (resp. topological) minimal cones in…

Classical Analysis and ODEs · Mathematics 2018-08-30 Xiangyu Liang

We prove the first robust dimension free isoperimetric result for the standard Gaussian measure $\gamma_n$ and the corresponding boundary measure $\gamma_n^+$ in $\mathbb {R}^n$. The main result in the theory of Gaussian isoperimetry…

Probability · Mathematics 2015-06-05 Elchanan Mossel , Joe Neeman

We consider a convex Euclidean hypersurface that evolves by a volume or area preserving flow with speed given by a general nonhomogeneous function of the mean curvature. For a broad class of possible speed functions, we show that any closed…

Differential Geometry · Mathematics 2016-10-25 Maria Chiara Bertini , Carlo Sinestrari

We study the variational behavior of the total inverse mean curvature of curves with prescribed boundary in the half-plane. We characterize the existence of critical points with prescribed area. We show that such critical points are…

Differential Geometry · Mathematics 2025-10-30 Julián Pozuelo , Simone Verzellesi , Giacomo Vianello

We construct asymptotically Euclidean solutions of the vacuum Einstein constraint equations with an apparent horizon boundary condition. Specifically, we give sufficient conditions for the constant mean curvature conformal method to…

General Relativity and Quantum Cosmology · Physics 2015-06-25 David Maxwell

We provide sharp stability estimates for the Alexandrov Soap Bubble Theorem in the hyperbolic space. The closeness to a single sphere is quantified in terms of the dimension, the measure of the hypersurface and the radius of the touching…

Differential Geometry · Mathematics 2018-09-05 Giulio Ciraolo , Luigi Vezzoni

We consider the volume constrained fractional mean curvature flow of a nearly spherical set, and prove long time existence and asymptotic convergence to a ball. The result applies in particular to convex initial data, under the assumption…

Analysis of PDEs · Mathematics 2022-04-13 Annalisa Cesaroni , Matteo Novaga

Estimates for the norm of the second fundamental form, $|A|$, play a crucial role in studying the geometry of surfaces. In fact, when $|A|$ is bounded the surface cannot bend too sharply. In this paper we prove that for an embedded geodesic…

Differential Geometry · Mathematics 2011-05-10 Theodora Bourni , Giuseppe Tinaglia

We establish generic regularity results for isoperimetric regions in closed Riemannian manifolds of dimension eight. In particular, we show that every isoperimetric region has a smooth nondegenerate boundary for a generic choice of smooth…

Differential Geometry · Mathematics 2025-11-07 Kobe Marshall-Stevens , Gongping Niu , Davide Parise

We prove that the isoperimetric inequalities in the euclidean and hyperbolic plane hold for all euclidean, respectively hyperbolic, cone-metrics on a disk with singularities of negative curvature. This is a discrete analog of the theorems…

Differential Geometry · Mathematics 2014-09-29 Ivan Izmestiev

We give an estimate of the mean curvature of a complete submanifold lying inside a closed cylinder $B(r)\times\R^{\ell}$ in a product Riemannian manifold $N^{n-\ell}\times\R^{\ell}$. It follows that a complete hypersurface of given constant…

Differential Geometry · Mathematics 2009-10-24 L. J. Alias , G. Pacelli Bessa , M. Dajczer

We prove various inequalities measuring how far from an isometry a local map from a manifold of high curvature to a manifold of low curvature must be. We consider the cases of volume-preserving, conformal and quasi-conformal maps. The…

Differential Geometry · Mathematics 2014-03-18 Benoît Kloeckner

We give a refinement of the quantitative isoperimetric inequality. We prove that the isoperimetric gap controls not only the Fraenkel asymmetry but also the oscillation of the boundary.

Metric Geometry · Mathematics 2014-11-10 Nicola Fusco , Vesa Julin

We investigate theoretically the near-wall region in elastic turbulence of a dilute polymer solution in the limit of large Weissenberg number. As it was established experimentally, elastic turbulence possesses a boundary layer where the…

Fluid Dynamics · Physics 2019-02-20 S. Belan , A. Chernykh , V. Lebedev
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