MATHEMATICAL INEQUALITIES & APPLICATIONS, cilt.7, sa.4, ss.491-496, 2004 (SCI-Expanded)
Let S = {x(1), x(2),...., x(n)} be a set of distinct positive integers and [x(i), x(j)] denote the least common multiple of x(i) and x(j). The matrix [S-1] = (s(ij)), where s(ij) = 1/[x(i),x(j)] called the reciprocal least common multiple (reciprocal LCM) matrix on S. In this paper, we investigate some matrix norms of the reciprocal LCM matrix and one of its generalizations on S = {1, 2,..., n} in terms of the Riemann zeta function.