Results 1 to 10 of about 73 (58)

Minimality of polytopes in a nonlocal anisotropic isoperimetric problem [PDF]

open access: yesNonlinear Analysis, 2021
We consider the minimization of an energy functional given by the sum of a crystalline perimeter and a nonlocal interaction of Riesz type, under volume constraint. We show that, in the small mass regime, if the Wulff shape of the anisotropic perimeter has certain symmetry properties, then it is the unique global minimizer of the total energy.
Bonacini, Marco   +2 more
openaire   +7 more sources

Discrete isoperimetric problems in spaces of constant curvature [PDF]

open access: yesMathematika, Volume 69, Issue 1, Page 33-50, January 2023., 2022
The aim of this paper is to prove isoperimetric inequalities for simplices and polytopes with d+2$d+2$ vertices in Euclidean, spherical and hyperbolic d‐space.
Bushra Basit, Z. Lángi
semanticscholar   +2 more sources

Convergence of the Riemannian Langevin Algorithm [PDF]

open access: yesarXiv.org, 2022
We study the Riemannian Langevin Algorithm for the problem of sampling from a distribution with density ν with respect to the natural measure on a manifold with metric g.
Khashayar Gatmiry, S. Vempala
semanticscholar   +1 more source

The extremals of the Alexandrov–Fenchel inequality for convex polytopes [PDF]

open access: yesActa Mathematica, 2020
The Alexandrov-Fenchel inequality, a far-reaching generalization of the classical isoperimetric inequality to arbitrary mixed volumes, lies at the heart of convex geometry.
Yair Shenfeld, R. Handel
semanticscholar   +1 more source

Shadows of convex bodies [PDF]

open access: yes, 1989
It is proved that if C is a convex body in Rn then C has an affine image C (of nonzero volume) so that if P is any 1-codimensional orthogonal projection, |PCa > 1Žcl(n-l)/n It is also shown that there is a pathological body, K, all of whose orthogonal ...
K. Ball
semanticscholar   +1 more source

The isoperimetric problem for $3$-polytopes with six vertices

open access: yes, 2019
We prove that the regular octahedron has the minimal surface area among 3-polytopes of given volume and having at most six vertices.
Böröczky, Károly J., Kovács, Ágnes
openaire   +2 more sources

The edge-isoperimetric problem on the 600-vertex regular solid

open access: yes, 2003
Between 1963 and 1979 the edge-isoperimetric problem was solved on the graphs of all regular convex polytopes except the four-dimensional one with 600 vertices.
L. H. Harper, D. Dreier
semanticscholar   +1 more source

Discrete Geometry and Symmetry : dedicated to Károly Bezdek and Egon Schulte on the occasion of their 60th birthdays

open access: yes, 2018
This book consists of contributions from experts, presenting a fruitful interplay between different approaches to discrete geometry. Most of the chapters were collected at the conference “Geometry and Symmetry” in Veszprém, Hungary from 29 June to 3 July
Deza, Antoine   +2 more
core   +1 more source

Floating Bodies and Approximation - Part 3

open access: yes, 2019
Presented on December 11, 2019 at 3:45 p.m. in the Bill Moore Student Success Center, Press Rooms A & B, Georgia Tech.Workshop in Convexity and Geometric Aspects of Harmonic AnalysisElisabeth Werner, Case Western Reserve University, Department of ...
Werner, Elisabeth
core  

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