MathDB
Putnam 1959 A6

Source: Putnam 1959

June 15, 2022
Putnammatrixdeterminant

Problem Statement

Let mm and nn be integers greater than 11 and a1,a2,,am+1a_1 ,a_2 ,\ldots, a_{m+1} be real numbers. Prove that there exist real n×nn\times n matrices A1,A2,,AmA_1 ,A_2,\ldots, A_m such that (i) det(Aj)=aj\det(A_j) =a_j for j=1,2,,mj=1,2,\ldots,m and (ii) det(A1+A2++Am)=am+1.\det(A_1 +A_2 +\ldots+A_m)=a_{m+1}.