English

Novel view on classical convexity theory

Functional Analysis 2020-05-25 v1 Metric Geometry

Abstract

Let BxRnB_{x}\subseteq\mathbb{R}^{n} denote the Euclidean ball with diameter [0,x][0,x], i.e. with with center at x2\frac{x}{2} and radius x2\frac{\left|x\right|}{2}. We call such a ball a petal. A flower FF is any union of petals, i.e. F=xABxF=\bigcup_{x\in A}B_{x} for any set ARnA\subseteq\mathbb{R}^{n}. We showed in previous work that the family of all flowers F\mathcal{F} is in 1-1 correspondence with K0\mathcal{K}_{0} - the family of all convex bodies containing 00. Actually, there are two essentially different such correspondences. We demonstrate a number of different non-linear constructions on F\mathcal{F} and K0\mathcal{K}_{0}. Towards this goal we further develop the theory of flowers.

Keywords

Cite

@article{arxiv.2005.11253,
  title  = {Novel view on classical convexity theory},
  author = {Vitali Milman and Liran Rotem},
  journal= {arXiv preprint arXiv:2005.11253},
  year   = {2020}
}
R2 v1 2026-06-23T15:44:39.530Z