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Three-parameter complex Hadamard matrices of order 6

โœ Scribed by Bengt R. Karlsson


Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
187 KB
Volume
434
Category
Article
ISSN
0024-3795

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๐Ÿ“œ SIMILAR VOLUMES


-reducible complex Hadamard matrices of
โœ Bengt R. Karlsson ๐Ÿ“‚ Article ๐Ÿ“… 2011 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 160 KB

Complex Hadamard matrices H of order 6 are characterized in a novel manner, according to the presence/absence of order 2 Hadamard submatrices. It is shown that if there exists one such submatrix, H is equivalent to a Hadamard matrix where all the nine submatrices are Hadamard. The ensuing subset of

Checkered Hadamard Matrices of Order 16
โœ R.W. Goldbach; H.L. Claasen ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 112 KB

In this paper all the so-called checkered Hadamard matrices of order 16 are determined (i.e., Hadamard matrices consisting of 16 square blocks H i j of order 4 such that H ii = J 4 and H i j J 4 = J 4 H i j = 0 for i = j and where J 4 is the all-one matrix of order 4). It is shown that the checkered

Hadamard matrices of order 764 exist
โœ Dragomir ลฝ. ฤokoviฤ‡ ๐Ÿ“‚ Article ๐Ÿ“… 2008 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 268 KB
The excess of complex Hadamard matrices
โœ H. Kharaghani; Jennifer Seberry ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Springer Japan ๐ŸŒ English โš– 358 KB
Classification of Hadamard matrices of o
โœ Hiroshi Kimura ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 489 KB

We constructed all inequivalent Hadamard matrices with Hall sets of order 28 and classified by K-matrices associated with Hadamard matrices except five matrices in our earlier work (Kimura, 1988) (see also Kimura, to appear;Kimura and Ohmori, 1987). In this paper we prove that Hadamard matrices with