EntityQ7127466· pop 5· linked from 10 articlesPaley constructionSign in to saveConnectionsHadamard matrixEntitymathematicsEntityEnglandEntityInternational Standard Book NumberEntityprime numberEntitydigital object identifierEntitymatrixEntitypolynomialEntityparityEntityfieldEntitysquareEntitymodular arithmeticEntityidentity matrixEntityzero of a functionEntitysymmetric matrixEntityfinite fieldEntityorthogonal matrixEntityskew-symmetric matrixEntityquadratic functionEntityLegendre symbolEntityCategoriesMatrices (mathematics)