Abelian subgroup of O_4(Q) related to Ryser's conjecture

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Published: 2022-01-14
DOI: https://doi.org/10.56947/gjom.v12i1.776
Keywords:
circulant matrices, Hadamard matrices, sums of roots of unity, unit circle, cyclotomic fields

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Luis Gallardo
Université de Bretagne Occidentale

Abstract

We characterize the group generated by the 4 × 4 circulant Hadamard matrices divided by 2.

Article Details

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Vol. 12 No. 1 (2022)

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Articles

How to Cite

Abelian subgroup of O_4(Q) related to Ryser’s conjecture. (2022). Gulf Journal of Mathematics, 12(1), 56-61. https://doi.org/10.56947/gjom.v12i1.776