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On Hadamard matrices of order 2(p+1) with an automorphism of odd prime order p |
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| Authors: | Daniel B. Dalan Masaaki Harada Akihiro Munemasa |
| Abstract: | In this paper, we investigate Hadamard matrices of order 2(p + 1) with an automorphism of odd prime order p. In particular, the classification of such Hadamard matrices for the cases p = 19 and 23 is given. Self‐dual codes related to such Hadamard matrices are also investigated. © 2003 Wiley Periodicals, Inc. J Combin Designs 11: 367–380, 2003; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/jcd.10052 |
| Keywords: | Hadamard matrix automorphism self‐dual code Hadamard design |