Convex bodies with centrally symmetric sections
Abstract
Let be a convex body, . We say that satisfies the Barker-Larman condition if there exists a ball in the interior of such that for every suppor hyperplane of , the section is a centrally symmetric set. Barker and Larman conjectured that the Barker-Larman condition characterizes the ellipsoid. In this work we prove an special case of such conjecture, in particular, we assume that the convex body is centrally symmetric. Our main result is the following: Let be a centrally symmetric and strictly convex body, with center at , and let be a ball in the interior of and not containing : If satisfies the Barker-Larman condition with respect to and is suitable for (intuitively, is suitable for if the boundary of is not very close to the boundary of ), then is an ellipsoid.
Keywords
Cite
@article{arxiv.2307.07624,
title = {Convex bodies with centrally symmetric sections},
author = {E. Morales-Amaya},
journal= {arXiv preprint arXiv:2307.07624},
year = {2025}
}