Notes on the divisibility of GCD and LCM MatricesPentti Haukkanen, Ismo KorkeeInt. J. Math. Mathematical Sciences2005Let S = {x1,x2, . . . ,xn} be a set of positive integers, and let f be an arithmetical function. The matrices (S) f = [ f (gcd(xi,xj))] and [S] f = [ f (lcm[xi,xj])] are referred to as the greatestâ€¦ (More)