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Hadamard matrices and $ \delta $-codes of length $ 3n$


Author: C. H. Yang
Journal: Proc. Amer. Math. Soc. 85 (1982), 480-482
MSC: Primary 05B20; Secondary 62K10, 94A29
DOI: https://doi.org/10.1090/S0002-9939-1982-0656128-3
MathSciNet review: 656128
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Abstract: It is found that four-symbol $ \delta $-codes of length $ t = 3n$ can be composed for odd $ n \leqslant 59$ or $ n = {2^a}{10^b}{26^c} + 1$, where all $ a$, $ b$ and $ c \geqslant 0$. Consequently new families of Hadamard matrices of orders $ 4tw$ and $ 20tw$ can be constructed, where $ w$ is the order of Williamson matrices.


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DOI: https://doi.org/10.1090/S0002-9939-1982-0656128-3
Article copyright: © Copyright 1982 American Mathematical Society

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