Williamson matrices and a conjecture of Ito's

DOI10.1023/A:1008398319853zbMath0938.05016OpenAlexW1590336317MaRDI QIDQ1963171

Bernhard Schmidt

Publication date: 24 January 2000

Published in: Designs, Codes and Cryptography (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1023/a:1008398319853

zbMATH Keywords

relative difference setsWilliamson matrixItô conjecture

Mathematics Subject Classification ID

Combinatorial aspects of difference sets (number-theoretic, group-theoretic, etc.) (05B10)

Related Items (16)

Relative difference sets and Hadamard matrices from perfect quaternionic arrays ⋮ Hadamard full propelinear codes of type Q; rank and kernel ⋮ On equivalence of negaperiodic Golay pairs ⋮ Williamson type Hadamard matrices with circulant components ⋮ Difference sets disjoint from a subgroup. III: The skew relative cases ⋮ Perfect sequences over the quaternions and \((4n, 2, 4n, 2n)\)-relative difference sets in \(C_n \times Q_8\) ⋮ About some Hadamard full propelinear \((2t,2,2)\)-codes. Rank and kernel ⋮ Phased unitary Golay pairs, Butson Hadamard matrices and a conjecture of Ito's ⋮ On Hadamard full propelinear codes with associated group \(C_{2t}\times C_2\) ⋮ Construction of relative difference sets and Hadamard groups ⋮ Williamson matrices up to order 59 ⋮ On D4t-Cocyclic Hadamard Matrices ⋮ Unnamed Item ⋮ Applying computer algebra systems with SAT solvers to the Williamson conjecture ⋮ Generalized binary arrays from quasi-orthogonal cocycles ⋮ Hadamard and conference matrices

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