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On maximal weights of Hadamard matrices

✍ Scribed by Hikoe Enomoto; Masahiko Miyamoto

Publisher: Elsevier Science
Year: 1980
Tongue: English
Weight: 277 KB
Volume: 29
Category: Article
ISSN: 0097-3165
DOI: 10.1016/0097-3165(80)90050-3

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📜 SIMILAR VOLUMES

An infinite class of Hadamard matrices o

An infinite class of Hadamard matrices of maximal excess

✍ H. Kharaghani 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 308 KB

We show that if there is a skew-Hadamard matrix of order m then there is an Hadamard matrix of order 4m2 -4m whose excess attains the maximum possible bound predicted by S. Kounias and N. Farmakis, On the excess of Hadamard matrices, Discrete Mathematics 68 (1988) 59-69. That is a(4m\* -4m) = 4(m -1

Hadamard matrices of order ≡8 (mod 16) w

Hadamard matrices of order ≡8 (mod 16) with maximal excess

✍ Christos Koukouvinos; Jennifer Seberry 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 237 KB

Koukouvinos, C. and J. Seberry, Hadamard matrices of order =8(mod 16) with maximal excess, Discrete Mathematics 92 (1991) 173-176. Kounias and Farmakis, in 'On the excess of Hadamard matrices', Discrete Math. 68 (1988) 59-69, showed that the maximal excess (or sum of the elements) of an Hadamard mat

On the existence of Hadamard matrices

✍ Jennifer Seberry Wallis 📂 Article 📅 1976 🏛 Elsevier Science 🌐 English ⚖ 397 KB

Decomposition of Hadamard matrices

✍ Morris Plotkin 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 146 KB

On some constructions of modular hadamar

On some constructions of modular hadamard matrices

✍ S.P Rao Hebbare; G.A Patwardhan 📂 Article 📅 1976 🏛 Elsevier Science 🌐 English ⚖ 254 KB

On the asymptotic existence of complex H

On the asymptotic existence of complex Hadamard matrices

✍ R. Craigen; W. H. Holzmann; H. Kharaghani 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 159 KB 👁 2 views

Let N = N (q) be the number of nonzero digits in the binary expansion of the odd integer q. A construction method is presented which produces, among other results, a block circulant complex Hadamard matrix of order 2 α q, where α ≥ 2N -1. This improves a recent result of Craigen regarding the asympt