On bodies in $\mathbb{R}^5$ with directly congruent projections or sections
Metric Geometry
2018-01-30 v1
Abstract
Let and be two convex bodies in with countably many diameters, such that their projections onto all dimensional subspaces containing one fixed diameter are directly congruent. We show that if these projections have no rotational symmetries, and the projections of on certain 3 dimensional subspaces have no symmetries, then up to a translation. We also prove the corresponding result for sections of star bodies.
Cite
@article{arxiv.1801.08987,
title = {On bodies in $\mathbb{R}^5$ with directly congruent projections or sections},
author = {M. Angeles Alfonseca and Michelle Cordier and Dmitry Ryabogin},
journal= {arXiv preprint arXiv:1801.08987},
year = {2018}
}
Comments
18 pages, 2 figures