On bodies with directly congruent projections and sections
Metric Geometry
2015-09-30 v2 Classical Analysis and ODEs
Abstract
Let and be two convex bodies in , such that their projections onto all -dimensional subspaces are directly congruent. We prove that if the set of diameters of the bodies satisfy an additional condition and some projections do not have certain symmetries, then and coincide up to translation and an orthogonal transformation. We also show that an analogous statement holds for sections of star bodies, and prove the -dimensional versions of these results.
Keywords
Cite
@article{arxiv.1412.2727,
title = {On bodies with directly congruent projections and sections},
author = {M. Angeles Alfonseca and Michelle Cordier and Dmitry Ryabogin},
journal= {arXiv preprint arXiv:1412.2727},
year = {2015}
}
Comments
29 pages, 4 figures