Science Reports of the Tokyo Kyoiku Daigaku, Section A, Vol. 6, No. 163/167 (December 15, 1959), pp. 307-323 (17 pages) ...
Annals of Mathematics, Second Series, Vol. 176, No. 3 (November, 2012), pp. 1783-1826 (44 pages) We prove generalizations of Löwner's results on matrix monotone functions to several variables. We give ...