English

On the shadow problem and its generalizations to ellipsoids

Metric Geometry 2015-10-09 v1 Geometric Topology

Abstract

The main goal of the paper is to solve some problems about shadow for the sphere generalized on the case of the ellipsoid. Here, the essence of the problem is to find the the minimal number of non-overlapping balls with centers on the sphere which are not holding the center of the sphere and such that every line passing through the center of the sphere would intersect at least one of the balls. Another method of solving the shadow problem for the sphere is also proposed.

Keywords

Cite

@article{arxiv.1510.02088,
  title  = {On the shadow problem and its generalizations to ellipsoids},
  author = {Tetyana Osipchuk and Maxim Tkachuk},
  journal= {arXiv preprint arXiv:1510.02088},
  year   = {2015}
}

Comments

10 pages, 2 figures

R2 v1 2026-06-22T11:15:10.131Z