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We prove the existence and uniqueness up to translations of the solution to a Minkowski type problem for the torsional rigidity in the class of open bounded convex subsets of the $n$-dimensional Euclidean space. For the existence part we…

偏微分方程分析 · 数学 2008-09-29 A. Colesanti , M. Fimiani

The Brunn-Minkowski Theorem asserts that $\mu_d(A+B)^{1/d}\geq \mu_d(A)^{1/d}+\mu_d(B)^{1/d}$ for convex bodies $A,\,B\subseteq \R^d$, where $\mu_d$ denotes the $d$-dimensional Lebesgue measure. It is well-known that equality holds if and…

数论 · 数学 2013-11-19 G. A. Freiman , D. J. Grynkiewicz , O. Serra , Y. Stanchescu

We propose to derive deviation measures through the Minkowski gauge of a given set of acceptable positions. We show that, given a suitable acceptance set, any positive homogeneous deviation measure can be accommodated in our framework. In…

风险管理 · 定量金融 2021-07-27 Marlon Moresco , Marcelo Righi , Eduardo Horta

Many classical geometric inequalities on functionals of convex bodies depend on the dimension of the ambient space. We show that this dimension dependence may often be replaced (totally or partially) by different symmetry measures of the…

度量几何 · 数学 2014-12-11 René Brandenberg , Stefan König

We study the Wasserstein barycenter problem in the setting of non-compact, non-smooth extended metric measure spaces. We introduce a couple of new concepts and obtain the existence, uniqueness, absolute continuity of the Wasserstein…

度量几何 · 数学 2025-06-19 Bang-Xian Han , Deng-Yu Liu , Zhuo-Nan Zhu

We adapt Stein's method to isoperimetric and geometric inequalities. The main challenge is the treatment of boundary terms. We address this by using an elliptic PDE with an oblique boundary condition. We apply our geometric formulation of…

偏微分方程分析 · 数学 2024-12-02 Jordan Serres

We investigate the limitations of length measurements by accelerated observers in Minkowski spacetime brought about via the hypothesis of locality, namely, the assumption that an accelerated observer at each instant is equivalent to an…

广义相对论与量子宇宙学 · 物理学 2017-09-27 Bahram Mashhoon , Uwe Muench

We study several of the recent conjectures in regards to the role of symmetry in the inequalities of Brunn-Minkowski type, such as the $L_p$-Brunn-Minkowski conjecture of B\"or\"oczky, Lutwak, Yang and Zhang, and the Dimensional…

偏微分方程分析 · 数学 2020-09-01 Johannes Hosle , Alexander V. Kolesnikov , Galyna V. Livshyts

Penrose's Spin Geometry Theorem is extended further, from $SU(2)$ and $E(3)$ (Euclidean) to $E(1,3)$ (Poincar\'e) invariant elementary quantum mechanical systems. The Lorentzian spatial distance between any two non-parallel timelike…

量子物理 · 物理学 2025-02-12 László B. Szabados

We consider a functional $\mathcal F$ on the space of convex bodies in $\R^n$ defined as follows: ${\mathcal F}(K)$ is the integral over the unit sphere of a fixed continuous functions $f$ with respect to the area measure of the convex body…

度量几何 · 数学 2012-09-11 Andrea Colesanti , Daniel Hug , Eugenia Saorin Gomez

In various areas of modern physics and in particular in quantum gravity or foundational space-time physics it is of great importance to be in the possession of a systematic procedure by which a macroscopic or continuum limit can be…

数学物理 · 物理学 2011-07-19 Manfred Requardt

Minkowski space is shown to be globally stable as a solution to the massive Einstein--Vlasov system. The proof is based on a harmonic gauge in which the equations reduce to a system of quasilinear wave equations for the metric, satisfying…

广义相对论与量子宇宙学 · 物理学 2017-11-07 Hans Lindblad , Martin Taylor

This article describes a new proof of the equality condition for the Brunn-Minkowski inequality.

度量几何 · 数学 2010-05-11 Daniel A. Klain

One of the most fruitful results from Minkowski's geometric viewpoint on number theory is his so called 1st Fundamental Theorem. It provides an optimal upper bound for the volume of an o-symmetric convex body whose only interior lattice…

组合数学 · 数学 2016-03-09 Bernardo González Merino , Matthias Henze

Minkowski's classical existence theorem provides necessary and sufficient conditions for a Borel measure on the unit sphere of Euclidean space to be the surface area measure of a convex body. The solution is unique up to a translation. We…

度量几何 · 数学 2020-08-18 Rolf Schneider

We study a Riemannian manifold equipped with a density which satisfies the Bakry--\'Emery Curvature-Dimension condition (combining a lower bound on its generalized Ricci curvature and an upper bound on its generalized dimension). We first…

微分几何 · 数学 2017-11-27 Alexander V. Kolesnikov , Emanuel Milman

In the setting of essentially non-branching metric measure spaces, we prove the equivalence between the curvature dimension condition CD(K,N), in the sense of Lott--Sturm--Villani, and a newly introduced notion that we call strong…

度量几何 · 数学 2024-06-10 Mattia Magnabosco , Lorenzo Portinale , Tommaso Rossi

We discuss the notions of circumradius, inradius, diameter, and minimum width in generalized Minkowski spaces (that is, with respect to gauges), i.e., we measure the "size" of a given convex set in a finite-dimensional real vector space…

度量几何 · 数学 2017-07-18 Thomas Jahn

The theory presented in this monograph establishes the first mathematically rigorous result on the global nonlinear stability of self-gravitating matter under small perturbations of an asymptotically flat, spacelike hypersurface of…

广义相对论与量子宇宙学 · 物理学 2017-07-04 Philippe G. LeFloch , Yue Ma

In this paper we consider Riemannian manifolds of dimension at least $3$, with nonnegative Ricci curvature and Euclidean Volume Growth. For every open bounded subset with smooth boundary we establish the validity of an optimal Minkowski…

微分几何 · 数学 2024-11-06 Luca Benatti , Mattia Fogagnolo , Lorenzo Mazzieri