Frederik Ludvig Bang von Zeuthen

Frederik Ludvig Bang Zeuthen (9 September 1888 – 24 February 1959) was a Danish economist. He became an internationally recognized economist in the 1930s and published his research in English, French and German, as well as Danish. He was especially known for his theoretical microeconomics work in general equilibrium theory and the theories of market influences and pricing. He was one of the pioneers of the mathematical theory of monopolistic competition.

Economic research Zeuthen's book Problems of Monopoly and Economic Warfare, published in London in 1930 with a foreword by the economist Joseph Schumpeter, established for Zeuthen an international reputation among economists. Internationally, the term Zeuthen strategy is still used for a particular negotiation strategy studied in game theory. Zeuthen's article Das Prinzip der Knappheit, technische Kombination und Ökonomische Qualität (The principle of scarcity, technical combination and economic quality), published in the Austrian Zeitschrift für Nationalökonomie in 1933, was ground-breaking, as the article presented the first formulation using mathematical inequalities for Léon Walras's general theory of economic equilibrium.

However, Frederik Zeuthen's main theoretical work was his book Økonomisk Teori og Metode, published in 1942 followed by English translation published in 1955 as Economic Theory and Method. The books deals mainly with microeconomics and includes, inter alia, what became an internationally influential mathematical relationship between the prices of production factors and finished goods. Some of the lectures have been published in book form in the "Zeuther Lectures Book Series" from MIT Press.