Classifying cocyclic butson hadamard matrices

Ronan Egan, Dane Flannery, Padraig Catháin

Research output: Chapter in Book or Conference Publication/ProceedingConference Publicationpeer-review

7 Citations (Scopus)

Abstract

We classify all the cocyclic Butson Hadamard matrices BH(n, p) of order n over the pth roots of unity for an odd prime p and np < 100. That is, we compile a list of matrices such that any cocyclic BH(n, p) for these n, p is equivalent to exactly one element in the list. Our approach encompasses non-existence results and computational machinery for Butson and generalized Hadamard matrices that are of independent interest.

Original languageEnglish
Title of host publicationAlgebraic Design Theory and Hadamard Matrices, ADTHM 2014
Subtitle of host publicationADTHM, Lethbridge, Alberta, Canada, July 2014
EditorsCharles J. Colbourn
PublisherSpringer New York LLC
Pages93-106
Number of pages14
Volume133
ISBN (Electronic)9783319177298
ISBN (Print)9783319177281
DOIs
Publication statusPublished - 3 Sep 2015
EventWorkshop on Algebraic Design Theory and Hadamard Matrices, ADTHM 2014 - Lethbridge, Canada
Duration: 8 Jul 201411 Jul 2014

Publication series

NameSpringer Proceedings in Mathematics and Statistics
Volume133
ISSN (Print)2194-1009
ISSN (Electronic)2194-1017

Conference

ConferenceWorkshop on Algebraic Design Theory and Hadamard Matrices, ADTHM 2014
Country/TerritoryCanada
CityLethbridge
Period8/07/1411/07/14

Keywords

  • Automorphism group
  • Butson Hadamard matrix
  • Cocyclic
  • Relative difference set

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