Ghaderpour, Ebrahim; University of Lethbridge. Faculty of Arts and Science
(Lethbridge, Alta. : University of Lethbridge, Dept. of Mathematics and Computer ScienceArts and ScienceDepartment of Mathematics and Computer Science, 2013)
An orthogonal design of order n and type (s1; : : : ; s`), denoted OD(n; s1; : : : ; s`),
is a square matrix X of order n with entries from f0; x1; : : : ; x`g, where the xj's
are commuting variables, that satis es XXt ...