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Coverings of convex bodies have emerged as a central component in the design of efficient solutions to approximation problems involving convex bodies. Intuitively, given a convex body $K$ and $\epsilon> 0$, a covering is a collection of…

计算几何 · 计算机科学 2023-03-16 Sunil Arya , Guilherme D. da Fonseca , David M. Mount

We explore optimal circular nonconvex partitions of regular k-gons. The circularity of a polygon is measured by its aspect ratio: the ratio of the radii of the smallest circumscribing circle to the largest inscribed disk. An optimal…

计算几何 · 计算机科学 2007-05-23 Mirela Damian , Joseph O'Rourke

In this work we study subdivisions of $k$-rotationally symmetric planar convex bodies that minimize the maximum relative diameter functional. For some particular subdivisions called $k$-partitions, consisting of $k$ curves meeting in an…

度量几何 · 数学 2015-01-19 Antonio Cañete , Uwe Schnell , Salvador Segura Gomis

Given a set of disjoint simple polygons $\sigma_1, \ldots, \sigma_n$, of total complexity $N$, consider a convexification process that repeatedly replaces a polygon by its convex hull, and any two (by now convex) polygons that intersect by…

计算几何 · 计算机科学 2019-12-11 Elias Dahlhaus , Sariel Har-Peled , Alan L. Hu

We prove a long standing conjecture concerning the fencing problem in the plane: among planar convex sets of given area, prove that the disc, and only the disc maximizes the length of the shortest area-bisecting curve. Although it may look…

最优化与控制 · 数学 2010-11-30 L. Esposito , V. Ferone , B. Kawohl , C. Nitsch , C. Trombetti

This is the eighth and final paper in a series giving a proof of the Kepler conjecture, which asserts that the density of a packing of congruent spheres in three dimensions is never greater than $\pi/\sqrt{18}\approx 0.74048...$. This is…

度量几何 · 数学 2007-05-23 Thomas C. Hales

Optimal packing of objects in containers is a critical problem in various real-life and industrial applications. This paper investigates the two-dimensional packing of convex polygons without rotations, where only translations are allowed.…

计算几何 · 计算机科学 2023-08-17 Adam Kurpisz , Silvan Suter

In this paper we study the area minimizing problem in some kinds of conformal cones. This concept is a generalization of the cones in Eulcidean spaces and the cylinders in product manifolds. We define a non-closed-minimal (NCM) condition…

微分几何 · 数学 2020-01-20 Qiang Gao , Hengyu Zhou

We explore an instance of the question of partitioning a polygon into pieces, each of which is as ``circular'' as possible, in the sense of having an aspect ratio close to 1. The aspect ratio of a polygon is the ratio of the diameters of…

计算几何 · 计算机科学 2026-02-10 Mirela Damian , Joseph O'Rourke

We present filling as a new type of spatial subdivision problem that is related to covering and packing. Filling addresses the optimal placement of overlapping objects lying entirely inside an arbitrary shape so as to cover the most…

最优化与控制 · 数学 2012-08-29 Carolyn L. Phillips , Joshua A. Anderson , Elizabeth R. Chen , Sharon C. Glotzer

In an Euclidean $d$-space, the container problem asks to pack $n$ equally sized spheres into a minimal dilate of a fixed container. If the container is a smooth convex body and $d\geq 2$ we show that solutions to the container problem can…

度量几何 · 数学 2011-10-20 Achill Schuermann

We consider the problem of finding a geodesic disc of smallest radius containing at least $k$ points from a set of $n$ points in a simple polygon that has $m$ vertices, $r$ of which are reflex vertices. We refer to such a disc as a SKEG…

计算几何 · 计算机科学 2024-02-02 Prosenjit Bose , Anthony D'Angelo , Stephane Durocher

It is proved by Brendle in [4] that the equatorial disk $D^k$ has least area among $k$-dimensional free boundary minimal surfaces in the Euclidean ball $B^n$. By comparing the excess of free boundary minimal surfaces with the excess of the…

微分几何 · 数学 2023-08-31 Ezequiel Barbosa , Celso Viana

A simple n-gon is a polygon with n edges such that each vertex belongs to exactly two edges and every other point belongs to at most one edge. Brass, Moser and Pach asked the following question: For n > 3 odd, what is the maximum perimeter…

度量几何 · 数学 2012-07-18 Zsolt Lángi

We study the problems of covering or partitioning a polygon $P$ (possibly with holes) using a minimum number of small pieces, where a small piece is a connected sub-polygon contained in an axis-aligned unit square. For covering, we seek to…

In this article, we present an approximation algorithm for solving the Weighted Region Problem amidst a set of $ n $ non-overlapping weighted disks in the plane. For a given parameter $ \varepsilon \in (0,1]$, the length of the approximate…

计算几何 · 计算机科学 2024-09-16 Prosenjit Bose , Jean-Lou De Carufel , Guillermo Esteban , Anil Maheshwari

We prove the validity of an inequality involving a mean of the area and the length of the boundary of immersed disks whose boundaries are homotopically non-trivial curves in an oriented compact manifold which possesses convex mean curvature…

微分几何 · 数学 2021-04-08 Ezequiel Barbosa , Franciele Conrado

A convex polygon $Q$ is inscribed in a convex polygon $P$ if every side of $P$ contains at least one vertex of $Q$. We present algorithms for finding a minimum area and a minimum perimeter convex polygon inscribed in any given convex…

度量几何 · 数学 2021-09-24 Csenge Lili Ködmön , Zsolt Lángi

We study the problem of finding maximum-area rectangles contained in a polygon in the plane. There has been a fair amount of work for this problem when the rectangles have to be axis-aligned or when the polygon is convex. We consider this…

计算几何 · 计算机科学 2019-10-22 Yujin Choi , Seungjun Lee , Hee-Kap Ahn

Answering Tarski's plank problem, Bang showed in 1951 that it is impossible to cover a convex body $K \subset \mathbb{R}^d$ with $d \geq 1$ by planks whose total width is less than the minimal width $w(K)$ of $K$. In 2003, A. Bezdek asked…

度量几何 · 数学 2025-11-24 Gergely Ambrus , Julian Huddell , Maggie Lai , Matthew Quirk , Elias Williams