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- Title
On equivalence classes of Butson Hadamard matrices BH (4,2k).
- Authors
Putri, Pritta Etriana; Wu, William
- Abstract
A Butson Hadamard matrix of order n over the kth root of unity is a square matrix H which entries are some complex kth root of unity such that HH* = nIn, where H* is the complex conjugate of H. A set of Butson Hadamard matrices of order n over the kth root of unity is denoted by BH(n,k). It is well-known that a Butson Hadamard matrices is a generalization of a Hadamard matrix. In this paper, we give some properties of Butson Hadamard matrices of order 4 which implies to the upper and the lower bounds of the number of its equivalence classes. We also showed that the entries of Butson Hadamard matrices of order 4 is 2k-th root of unity for some integer k. Furthermore, we describe the equivalence classes of Butson Hadamard matrices of order 4 by constructing the representative of the class.
- Subjects
HADAMARD matrices
- Publication
Journal of Algebra Combinatorics Discrete Structures & Applications, 2024, Vol 11, Issue 1, p15
- ISSN
2148-838X
- Publication type
Article