The short paper of John von Neumann, "0ber ein okonomisches Gleichungssystem und eine Verallgemeinerung des Brouwerschen Fixpunkt- satzes", published 1937 in Vienna in German and translated into English and subsequently published in the "Review of Economic Studies" (1945- 1946) as "A Model of General Economic Equilibrium" is one of the most important contributions to modern mathematical economics, if the rele- vance of a paper is judged by the number...