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  1. Guillermo Calvo. Tjalling Charles Koopmans (August 28, 1910 – February 26, 1985) was a Dutch-American mathematician and economist. He was the joint winner with Leonid Kantorovich of the 1975 Nobel Memorial Prize in Economic Sciences for his work on the theory of the optimum allocation of resources.

  2. Biographical. I was born in 1910 in ‘s Graveland, the Netherlands, the third son of Sjoerd Koopmans and Wijtske van der Zee. Both my parents had been trained as schoolteachers and my father was principal of the (Protestant) “School with the Bible”. Our house was squeezed between the two sections of that school.

  3. Tjalling Koopmans was born in Graveland, the Netherlands. He went to the University of Utrecht at age 17. He studied mathematics, psychology, psychiatry and theoretical physics before switching to mathematical economics under Jan Tinbergen in Amsterdam. In 1940, he went to the United States.

  4. Tjalling C. Koopmans (born Aug. 28, 1910, ’s-Graveland, Neth.—died Feb. 26, 1985, New Haven, Conn., U.S.) was a Dutch-born American economist who shared—with Leonid Kantorovich of the Soviet Union—the Nobel Prize for Economics in 1975. The two men independently developed a rational method, called activity analysis, for allocating ...

  5. Tjalling Charles Koopmans was known as Challing to his colleagues. His parents, Sjoerd Koopmans and Wijtske van der Zee, were both school teachers who held education in the highest regard. His father was a strict Calvinist but his mother was more liberal in her religious views. Tjalling had two older brothers and all three boys attended the ...

  6. Tjalling C. Koopmans’ speech at the Nobel Banquet, December 10, 1975. Your Majesties, Your Royal Highnesses, Ladies and Gentlemen, Also on behalf of my colleague and co-recipient of the 1975 award for economics, I wish to thank the Royal Academy of Sciences, the Nobel Foundation, and all our other institutional and personal hosts for the splendid hospitality and friendship extended to us.

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  8. Tjalling Koopmans shared the 1975 Nobel Prize with Leonid Kantorovich “for their contributions to the theory of optimum allocation of resources.” Koopmans, a native of the Netherlands, started in mathematics and physics, but in the 1930s switched to economics because it was “closer to real life.” In 1938 he succeeded Jan Tinbergen at the League […]