Amicable orthogonal designs

Peter J. Robinson
1976 Bulletin of the Australian Mathematical Society  
A powerful tool in the construction of orthogonal designs has been amicable orthogonal designs. Recent results in the construction of Hadamard matrices has led to the need to find amicable orthogonal designs A, B in order n and of types [u ± , u 2 , ..., u s ) and [v ± , t> 2 , ..., v p ) respectively satisfying A t = -A , B* = B , and AB* = BA t with s r £ u. = n -1 and £ v• = n . i=l % i=l r
doi:10.1017/s0004972700025132 fatcat:4i2k7z24n5bdpme5bwyvxplid4