El-Kassar, A. N.; Habre, S. S.; Awad, Y. A.
(2009)
Problem statement: Let T be a set of n distinct positive integers, x1, x2, ..., xn. The n×n matrix [T] having (xi, xj), the greatest common divisor of xi and xj, as its (i,j)-entry is called the greatest common divisor ...