On the non-existence of generalised Hadamard matrices
β Scribed by Warwick de Launey
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 555 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0378-3758
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π SIMILAR VOLUMES
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 Ξ± q, where Ξ± β₯ 2N -1. This improves a recent result of Craigen regarding the asympt
## Abstract We construct two difference families on each of the cyclic groups of order 109, 145, and 247, and use them to construct skewβHadamard matrices of orders 436, 580, and 988. Such difference families and matrices are constructed here for the first time. The matrices are constructed by usin