%0 Journal Article %T Solution by the proposer %J Canadian mathematical bulletin %D 1959 %P 45-46 %V 2 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0008439500024942/ %R 10.1017/S0008439500024942 %F 10_1017_S0008439500024942