On equivalence of Hadamard matrices
type: Item
instance of: scholarly article
title: On equivalence of Hadamard matrices
zbMATH Open document ID: 0694.05018
author: Hiroshi Kimura
published in: Hokkaido Mathematical Journal
publication date: 1988-01-01T00:00:00Z
review text: In this important, careful, paper the author shows there are over 476 inequivalent Hadamard matrices of order 28. He defines and uses K- matrices, which have entries defined by the inner products of four rows at a time (analogous to a 4-profile) of an Hadamard matrix, to obtain this result. He then exhibits further Hadamard matrices which have the same K-matrix but differ using six rows (analogous to a 6-profile). Inequivalent Hadamard matrices of order 28 have also been studied by V. D. Tonchev.
Mathematics Subject Classification ID: 05B20
zbMATH DE Number: 4135958
zbMATH Keywords: inequivalent Hadamard matrices
reviewed by: Jennifer Seberry
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.14492/hokmj/1381517792
OpenAlex ID: W2008511823
DOI: 10.14492/HOKMJ/1381517792
description: scientific article; zbMATH DE number 4135958