English

On Helly's theorem in geodesic spaces

Metric Geometry 2014-05-20 v3

Abstract

In this short note we show that Helly's Intersection Theorem holds for convex sets in uniquely geodesic spaces (in particular in CAT(0) spaces) without the assumption that the convex sets are open or closed.

Keywords

Cite

@article{arxiv.1401.6654,
  title  = {On Helly's theorem in geodesic spaces},
  author = {Sergei Ivanov},
  journal= {arXiv preprint arXiv:1401.6654},
  year   = {2014}
}

Comments

3 pages, v3: added more references and details

R2 v1 2026-06-22T02:54:58.091Z