Hadamard Matrices
- A Hadamard matrix of order 428
The first Hadamard matrix of order 428 was reported by Hadi Kharaghani and Behruz Tayfeh-Rezaie on June 21, 2004.
- The announcement for the construction of the first Hadamard matrix of order 428 (Homepage of the Institute for Studies in Theoretical Physics and Mathematics)
- The first Hadamard matrix of order 428 (in text format - 537 KB)
- The first Hadamard matrix of order 428 (in winzip format - 7.45 KB)
- The plot of the first Hadamard matrix of order 428 (in GIF format - 28.90 KB)
- The four Turyn sequences of lengths 36, 36, 36, 35 that give the first T-sequences of lengths 71, 71, 36, 36(in text format - 766 Bytes)
- The four Turyn sequences of lengths 36, 36, 36, 35 that give the first T-sequences of lengths 71, 71, 36, 36 (in winzip format - 386 Bytes)
- The four sequences of order 107 with zero NPAF that give the first Hadamard matrix of order 428 (in text format - 480 Bytes)
- The four sequences of order 107 with zero NPAF that give the first Hadamard matrix of order 428 (in winzip format - 263 Bytes)
- Hadamard matrices of order 32 (19 Matrices)
Download zip file (3.45 KB)
- Hadamard matrices of order 36 (217 Matrices)
Download zip file (30.7 KB)
- Skew-Hadamard matrices of order 36 (18 Matrices)
Download in zip file (4.5 KB)
- Hadamard matrices of order 40 (98 Matrices)
Download zip file (26.0 KB)
- Skew-Hadamard matrices of order 40 (22 Matrices)
Download in zip file (5.87 KB)
- Hadamard matrices of order 44 (500 Matrices)
Download in zip file (146 KB)
- Skew-Hadamard matrices of order 44 (59 Matrices)
Download in zip file (18.1 KB)
- Hadamard matrices of order 48 (53 Matrices)
Download in zip file (12 KB)
- Hadamard matrices of order 48 from the OD(16;1,1,2,2,2,2,2,2,2) (4 Matrices)
Download zip file (1.41 KB)
- Hadamard matrices of order 52 (638 Matrices)
Download in zip file (313 KB)
- Skew-Hadamard matrices of order 52 (561 Matrices)
- Hadamard matrices of order 56 (205 Matrices)
Download in zip file (56 KB)
- Hadamard matrices of order 60 (256 Matrices)
Download in zip file (77.8 KB)
- Skew-Hadamard matrices of order 60 (22 Matrices)
Download in zip file (10 KB)
- Hadamard matrices of order 64 (395 Matrices)
Download in zip file (178 KB)
- Hadamard matrices of order 68 (340 Matrices)
Download in zip file (115 KB)
- Skew-Hadamard matrices of order 68 (4 Matrices)
Download in zip file (3 KB)
- Hadamard matrices of order 72 (597 Matrices)
Download in zip file (258 KB)
- Hadamard matrices of order 76 (10 Matrices)
Download in zip file (10.2 KB)
- Skew-Hadamard matrices of order 76 (16 Matrices)
Download in zip file (10 KB)
- Hadamard matrices of order 80 (149 Matrices)
Download in zip file (77 KB)
- Hadamard matrices of order 80 from the OD(16;1,1,2,2,2,2,2,2,2) (24 Matrices)
Download zip file (16.4 KB)
- Hadamard matrices of order 84 (13 Matrices)
Download in zip file (15.2 KB)
- Skew-Hadamard matrices of order 84 (14 Matrices)
Download in zip file (14 KB)
- Hadamard matrices of order 96 (2664 Matrices)
Download in zip file (2193 KB)
- Skew- Hadamard matrices of order 96 (12 Matrices)
Download in zip file (10 KB)
- Hadamard matrices of order 100 (17 Matrices)
Download in zip file (15 KB)
- Skew-Hadamard matrices of order 100 (18 Matrices)
Download in zip file (16 KB)
- Hadamard matrices of order 112 (94 Matrices)
Download in zip file (99.5 KB)
- Hadamard matrices of order 144 (422 Matrices)
Download in zip file (937 KB)
- Hadamard matrices of order 176 (360 Matrices)
Download in zip file (1091 KB)
All matrices are given in the form of (1,-1) matrices.
- Summary results for the existences of Hadamard matrices
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