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On convex holes in d-dimensional point sets
Combinatorics, Probability and Computing ( IF 0.9 ) Pub Date : 2021-06-18 , DOI: 10.1017/s0963548321000195
Boris Bukh , Ting-Wei Chao , Ron Holzman

Given a finite set $A \subseteq \mathbb{R}^d$, points $a_1,a_2,\dotsc,a_{\ell} \in A$ form an $\ell$-hole in A if they are the vertices of a convex polytope, which contains no points of A in its interior. We construct arbitrarily large point sets in general position in $\mathbb{R}^d$ having no holes of size $O(4^dd\log d)$ or more. This improves the previously known upper bound of order $d^{d+o(d)}$ due to Valtr. The basic version of our construction uses a certain type of equidistributed point sets, originating from numerical analysis, known as (t,m,s)-nets or (t,s)-sequences, yielding a bound of $2^{7d}$. The better bound is obtained using a variant of (t,m,s)-nets, obeying a relaxed equidistribution condition.

中文翻译:

关于 d 维点集中的凸孔

给定一个有限集$A \subseteq \mathbb{R}^d$, 点$a_1,a_2,\dotsc,a_{\ell} \in A$形成一个$\ell$- 打洞一种如果它们是凸多面体的顶点,其中不包含一种在它的内部。我们在一般位置构造任意大的点集$\mathbb{R}^d$没有大小孔$O(4^dd\log d)$或者更多。这改进了先前已知的阶数上限$d^{d+o(d)}$由于 Valtr。我们构造的基本版本使用某种类型的等分布点集,源自数值分析,称为 (,,s)-网或 (,s)-序列,产生一个界限$2^{7d}$. 使用 (,,s)-nets,服从一个宽松的等分布条件。
更新日期:2021-06-18
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