English

On the maximum size packings of disks with kissing radius 3

Metric Geometry 2022-10-19 v1 Combinatorics

Abstract

L\'{a}szl\'{o} Fejes T\'{o}th and Alad\'{a}r Heppes proposed the following generalization of the kissing number problem. Given a ball in Rd\mathbb{R}^d, consider a family of balls touching it, and another family of balls touching the first family. Find the maximal possible number of balls in this arrangement, provided that no two balls intersect by interiors, and all balls are congruent. They showed that the answer for disks on the plane is 1919. They also conjectured that if there are three families of disks instead of two, the answer is 3737. In this paper we confirm this conjecture.

Keywords

Cite

@article{arxiv.2205.15949,
  title  = {On the maximum size packings of disks with kissing radius 3},
  author = {Alexander Golovanov},
  journal= {arXiv preprint arXiv:2205.15949},
  year   = {2022}
}