engleski

A Series of Regular Hadamard Matrices

Let $p$ and $2p-1$ be prime powers and $p \equiv 3\ (mod\ 4)$. Then there exists a symmetric design with parameters $(4p^2, 2p^2 - p, p^2 - p)$. Thus there exists a regular Hadamard matrix of order $4p^2$.

regular Hadamard matrix; symmetric design; Menon design

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