Convex disks can cover their shadow
type: Item
instance of: scholarly article
title: Convex disks can cover their shadow
zbMATH Open document ID: 0712.52003
DOI: 10.1007/BF02187808
author: Géza Kós
author: Jenö Töröcsik
published in: Discrete \& Computational Geometry
publication date: 1990-01-01T00:00:00Z
review text: The authors give a short proof of the fact that given any 2-dimensional convex disk C in \({\mathbb{R}}^ 3\) and an orthogonal projection \(C'\) of C on a plane, then there is a congruent copy of C which contains \(C'\). [See \textit{M. D. Kovalev}, Ukr. Geom. Sb. 27, 57-68 (1984; Zbl 0551.52003) and \textit{H. E. Debrunner} and \textit{P. Mani-Levitska}, Discrete Comput. Geom. 1, 45-58 (1986; Zbl 0593.52002)].
Mathematics Subject Classification ID: 52A15
Mathematics Subject Classification ID: 52A10
Mathematics Subject Classification ID: 52C15
zbMATH DE Number: 4171843
zbMATH Keywords: shadow
zbMATH Keywords: covering
zbMATH Keywords: convex disk
zbMATH Keywords: orthogonal projection
MaRDI profile type: Publication
cites work: Q5643201
cites work: Q3344775
cites work: Can you cover your shadows?
description: scientific article; zbMATH DE number 4171843