A simple proof of Fiedler's conjecture concerning orthogonal matrices
type: Item
instance of: scholarly article
title: A simple proof of Fiedler's conjecture concerning orthogonal matrices
zbMATH Open document ID: 0909.15007
author: Bryan L. Shader
published in: Rocky Mountain Journal of Mathematics
publication date: 1999-03-28T00:00:00Z
full work available at URL: CONT27-4.html
review text: The author gives a new and shorter proof of Fiedler's conjecture that an \(n\times n\) orthogonal matrix, \(n>1\), which cannot be written as a direct sum, has at least \(4n-4\) nonzero entries.
Mathematics Subject Classification ID: 15B57
zbMATH DE Number: 1206698
zbMATH Keywords: Fiedler's conjecture
zbMATH Keywords: orthogonal matrix
zbMATH Keywords: nonzero entries
Wikidata QID: Q123239458
reviewed by: Ki Hang Kim
MaRDI profile type: Publication
OpenAlex ID: W1999599480
cites work: Q4281318
cites work: Matrix Analysis
DOI: 10.1216/RMJM/1181071872
description: scientific article; zbMATH DE number 1206698