pith. sign in

arxiv: 1801.08987 · v1 · pith:Y6CBFJGQnew · submitted 2018-01-26 · 🧮 math.MG

On bodies in mathbb{R}⁵ with directly congruent projections or sections

classification 🧮 math.MG
keywords projectionsbodiescongruentdimensionaldirectlymathbbsectionssubspaces
0
0 comments X
read the original abstract

Let $K$ and $L$ be two convex bodies in ${\mathbb R^5}$ with countably many diameters, such that their projections onto all $4$ dimensional subspaces containing one fixed diameter are directly congruent. We show that if these projections have no rotational symmetries, and the projections of $K,L$ on certain 3 dimensional subspaces have no symmetries, then $K=\pm L$ up to a translation. We also prove the corresponding result for sections of star bodies.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.