Title
Mappings of Butson-type Hadamard matrices.
Abstract
A BH(q,n) Butson-type Hadamard matrix H is an n×n matrix over the complex qth roots of unity that fulfils HH∗=nIn. It is well known that a BH(4,n) matrix can be used to construct a BH(2,2n) matrix, that is, a real Hadamard matrix. This method is here generalised to construct a BH(q,pn) matrix from a BH(pq,n) matrix, where q has at most two distinct prime divisors, one of them being p. Moreover, an algorithm for finding the domain of the mapping from its codomain in the case p=q=2 is developed and used to classify the BH(4,16) matrices from a classification of the BH(2,32) matrices.
Year
DOI
Venue
2018
10.1016/j.disc.2018.05.012
Discrete Mathematics
Keywords
Field
DocType
Butson-type Hadamard matrix,Classification,Complex matrix,Monomial equivalence,Mapping
Prime (order theory),Discrete mathematics,Combinatorics,Hadamard matrix,Codomain,Matrix (mathematics),Root of unity,Butson-type Hadamard matrix,Divisor,Hadamard transform,Mathematics
Journal
Volume
Issue
ISSN
341
9
0012-365X
Citations 
PageRank 
References 
0
0.34
3
Authors
2
Name
Order
Citations
PageRank
Patric R. J. Östergård160970.61
William T. Paavola200.34