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A SKEW HADAMARD MATRIX OF ORDER 36
[chapter]

1991
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Geometry and Combinatorics
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Hadamard matrices exist for infinitely many orders Am, m ^ 1, m integer, including all Am < 100, cf. [3], [2]. They are conjectured to exist for all such orders. Skew Hadamard matrices have been constructed for all orders Am < 100 except for 36, 52, 76, 92, cf. the table in [4]. Recently Szekeres [6] found skew Hadamard matrices of the order 2(p'+1) s 12 (mod 16), p prime, thus covering the case 76. In addition, Blatt and Szekeres [1] constructed one of order 52. The present note contains a

doi:10.1016/b978-0-12-189420-7.50026-8
fatcat:sojanxlq65gpronusgodwabms4