English

On the Matrices of Central Linear Mappings

Algebraic Geometry 2012-10-09 v1

Abstract

We show that a central linear mapping of a projectively embedded Euclidean nn-space onto a projectively embedded Euclidean mm-space is decomposable into a central projection followed by a similarity if, and only if, the least singular value of a certain matrix has multiplicity 2mn+1\ge 2m-n+1. This matrix is arising, by a simple manipulation, from a matrix describing the given mapping in terms of homogeneous Cartesian coordinates.

Keywords

Cite

@article{arxiv.1210.1922,
  title  = {On the Matrices of Central Linear Mappings},
  author = {Hans Havlicek},
  journal= {arXiv preprint arXiv:1210.1922},
  year   = {2012}
}
R2 v1 2026-06-21T22:17:18.339Z