English

Side Disks of a Spherical Great Polygon

Combinatorics 2021-02-05 v1 Metric Geometry

Abstract

Take a circle and mark nNn\in\mathbb{N} points on it designated as vertices. For any arc segment between two consecutive vertices which does not pass through any other vertex, there is a disk centered at its midpoint and has its end points on the boundary. We analyze intersection behaviour of these disks and show that the number of disjoint pairs among them is between (n2)(n3)2\frac{(n-2)(n-3)}{2} and n(n3)2\frac{n(n-3)}{2} and their intersection graph is a subgraph of a triangulation of a convex nn-gon.

Keywords

Cite

@article{arxiv.1801.03348,
  title  = {Side Disks of a Spherical Great Polygon},
  author = {Purevsuren Damba and Uuganbaatar Ninjbat},
  journal= {arXiv preprint arXiv:1801.03348},
  year   = {2021}
}