English

The Inverse Kakeya Problem

Metric Geometry 2019-12-19 v1

Abstract

We prove that the largest convex shape that can be placed inside a given convex shape QRdQ \subset \mathbb{R}^{d} in any desired orientation is the largest inscribed ball of QQ. The statement is true both when "largest" means "largest volume" and when it means "largest surface area". The ball is the unique solution, except when maximizing the perimeter in the two-dimensional case.

Cite

@article{arxiv.1912.08477,
  title  = {The Inverse Kakeya Problem},
  author = {Sergio Cabello and Otfried Cheong and Michael Gene Dobbins},
  journal= {arXiv preprint arXiv:1912.08477},
  year   = {2019}
}
R2 v1 2026-06-23T12:49:27.854Z