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In this paper we show that every matrix in the class of Sylvester Hadamard matrices of order 2k under H-equivalence can have full row and column sign spectrum, meaning that tabulating the numbers of sign interchanges along any row (or column) gives all integers 0,1,...,2k − 1 in some order. The construction and properties of Yates Hadamard matrices are presented and is established their equivalence...
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