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- W2059404749 abstract "All circulant and symmetric (1, -1) matrices A, B, C, D of order m =33 such that A 2 + B 2 + C 2 + D 2 =4 mI m are constructed. These are called matrices of the Williamson type. An algorithm is given reducing considerably the required computational time and suitable when m is not a prime. It is established that there are four non-equivalent Hadamard matrices of the Williamson type of order 4·33." @default.
- W2059404749 created "2016-06-24" @default.
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- W2059404749 date "1988-01-01" @default.
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- W2059404749 title "Hadamard matrices of the Williamson type of order 4·m, m=p·q an exhaustive search for m=33" @default.
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- W2059404749 doi "https://doi.org/10.1016/0012-365x(88)90040-4" @default.
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