Modified Busemann-Petty problem on sections of convex bodies

Abstract

The Busemann-Petty problem asks whether origin-symmetric convex bodies in ${\mathbb{R}}^n$ with smaller central hyperplane sections necessarily have smaller $n$-dimensional volume. It is known that the answer is affirmative if $n\le 4$ and negative if $n\ge 5$. In this article we modify the assumptions of the original Busemann-Petty problem to guarantee the affirmative answer in all dimensions.

17 pages