English

General uncrossing covering paths inside the axis-aligned bounding box

Combinatorics 2024-02-02 v1

Abstract

Given the finite set of n1n2nkn_1 \cdot n_2 \cdot \ldots \cdot n_k points Gn1,n2,,nkRkG_{n_1,n_2,\ldots,n_k} \subset \mathbb{R}^k such that nkn2n1Z+n_k \geq \cdots \geq n_2 \geq n_1 \in \mathbb{Z}^+, we introduce a new algorithm, called MΛ\LambdaI, which returns an uncrossing covering path inside the minimum axis-aligned bounding box [0,n11]×[0,n21]××[0,nk1][0,n_1-1] \times [0,n_2-1] \times \cdots \times [0,n_k-1], consisting of 3i=1k1ni23 \cdot \prod_{i=1}^{k-1} n_i-2 links of prescribed length nk1n_k-1 units. Thus, for any nk3n_k \geq 3, the link length of the covering path provided by our MΛ\LambdaI-algorithm is smaller than the cardinality of the set Gn1,n2,,nkG_{n_1,n_2,\ldots,n_k}. Furthermore, assuming k>2k>2, we present an uncrossing covering path for G3,3,,3G_{3,3,\ldots,3}, consisting of 203k3220 \cdot 3^{k-3}-2 straight-line edges that are 22 units long each, which is constrained by the axis-aligned bounding box [0,43]×[0,43]×[0,2]k2\left[0,4-\sqrt{3}\right] \times \left[0,4-\sqrt{3}\right] \times [0, 2]^{k-2}.

Cite

@article{arxiv.2402.00096,
  title  = {General uncrossing covering paths inside the axis-aligned bounding box},
  author = {Marco Ripà},
  journal= {arXiv preprint arXiv:2402.00096},
  year   = {2024}
}

Comments

14 pages, 9 figures

R2 v1 2026-06-28T14:33:41.096Z