No-dimensional Helly's theorem in uniformly convex Banach spaces
Functional Analysis
2024-09-10 v1
Abstract
We study the ``no-dimensional'' analogue of Helly's theorem in Banach spaces. Specifically, we obtain the following no-dimensional Helly-type results for uniformly convex Banach spaces: Helly's theorem, fractional Helly's theorem, colorful Helly's theorem, and colorful fractional Helly's theorem. The combinatorial part of the proofs for these Helly-type results is identical to the Euclidean case as presented in \cite{adiprasito2020theorems}. The primary difference lies in the use of a certain geometric inequality in place of the Pythagorean theorem. This inequality can be explicitly expressed in terms of the modulus of convexity of a Banach space.
Keywords
Cite
@article{arxiv.2409.05744,
title = {No-dimensional Helly's theorem in uniformly convex Banach spaces},
author = {G. Ivanov},
journal= {arXiv preprint arXiv:2409.05744},
year = {2024}
}