✦ LIBER ✦
Skew-Hadamard matrices of orders 436, 580, and 988 exist
✍ Scribed by Dragomir Ž. Đoković
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 98 KB
- Volume
- 16
- Category
- Article
- ISSN
- 1063-8539
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
We construct two difference families on each of the cyclic groups of order 109, 145, and 247, and use them to construct skew‐Hadamard matrices of orders 436, 580, and 988. Such difference families and matrices are constructed here for the first time. The matrices are constructed by using the Goethals‐Seidel array. © 2008 Wiley Periodicals, Inc. J Combin Designs 16: 493–498, 2008