Tjalling C. Koopmans

Born	August 28, 1910 's-Graveland
Died	February 26, 1985 New Haven
Residence	USA
Nationality	Dutch
Field	Economics
Institutions	Cowles Commission Yale University
Alma mater	University of Leiden
Academic advisor	Hendrik Anthony Kramers Jan Tinbergen
Known for	Exogenous growth model Econometrics Economics of transportation
Notable prizes	Nobel Prize in Economics (1975)

Tjalling Charles Koopmans ('s-Graveland, August 28, 1910 – New Haven, February 26, 1985) was the joint winner, with Leonid Kantorovich, of the 1975 Nobel Prize in Economics. Image File history File links No higher resolution available. ... August 28 is the 240th day of the year (241st in leap years) in the Gregorian calendar. ... 1910 (MCMX) was a common year starting on Saturday (link will display calendar) of the Gregorian calendar or a common year starting on Sunday of the 13-day slower Julian calendar. ... s-Graveland () is a village in the Dutch province of North Holland. ... February 26 is the 57th day of the year in the Gregorian calendar. ... Year 1985 (MCMLXXXV) was a common year starting on Tuesday (link displays 1985 Gregorian calendar). ... This article is about the city in Connecticut. ... Image File history File links No higher resolution available. ... Image File history File links Flag_of_the_Netherlands. ... This article needs additional references or sources for verification. ... The Cowles Commission for Research in Economics is a economic research institute, founded in Colorado Springs by the businessman and economist Alfred Cowles in 1932. ... “Yale” redirects here. ... Leiden University in the city of Leiden, is the oldest university in the Netherlands. ... Hendrik Anthony Kramers (Rotterdam, February 2, 1894 – Oegstgeest, April 24, 1952) was a Dutch physicist. ... Jan Tinbergen Jan Tinbergen (The Hague, April 12, 1903 – June 9, 1994 The Hague), Dutch economist, was awarded the first Bank of Sweden Prize in Economic Sciences in Memory of Alfred Nobel in 1969, which he shared with Ragnar Frisch for having developed and applied dynamic models for the analysis... The Exogenous growth model, also known as the Neo-classical model or Solow growth model is a term used to sum up the contributions of various authors to a model of long-run economic growth within the framework of neoclassical economics. ... Econometrics literally means economic measurement. It is a combination of mathematical economics and statistics. ... Transport economics is a cross-disciplinary study linking civil engineering and economics. ... The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel[1] (Swedish: Sveriges Riksbanks pris i ekonomisk vetenskap till Alfred Nobels minne), commonly called the Nobel Prize in Economics, or more acurately the Nobel Memorial Prize in Economic Sciences, is a prize awarded each year for outstanding intellectual... s-Graveland () is a village in the Dutch province of North Holland. ... August 28 is the 240th day of the year (241st in leap years) in the Gregorian calendar. ... 1910 (MCMX) was a common year starting on Saturday (link will display calendar) of the Gregorian calendar or a common year starting on Sunday of the 13-day slower Julian calendar. ... This article is about the city in Connecticut. ... February 26 is the 57th day of the year in the Gregorian calendar. ... Year 1985 (MCMLXXXV) was a common year starting on Tuesday (link displays 1985 Gregorian calendar). ... Leonid V. Kantorovich. ... Year 1975 (MCMLXXV) was a common year starting on Wednesday (link will display full calendar) of the Gregorian calendar. ... The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel[1] (Swedish: Sveriges Riksbanks pris i ekonomisk vetenskap till Alfred Nobels minne), commonly called the Nobel Prize in Economics, or more acurately the Nobel Memorial Prize in Economic Sciences, is a prize awarded each year for outstanding intellectual...

Koopmans was born in 's-Graveland in the Netherlands. He began his university education at the University of Utrecht, aged 17, specialising in mathematics. Three years later, in 1930, he switched to theoretical physics. In 1933, he met Jan Tinbergen, the 1969 Bank of Sweden prize winner, and moved to Amsterdam to study mathematical economics under him. In addition to mathematical economics, Koopmans extended his explorations to econometrics and statistics. s-Graveland () is a village in the Dutch province of North Holland. ... Utrecht University (Universiteit Utrecht in Dutch) is a university in Utrecht, The Netherlands. ... Jan Tinbergen Jan Tinbergen (The Hague, April 12, 1903 – June 9, 1994 The Hague), Dutch economist, was awarded the first Bank of Sweden Prize in Economic Sciences in Memory of Alfred Nobel in 1969, which he shared with Ragnar Frisch for having developed and applied dynamic models for the analysis... Nickname: Motto: Heldhaftig, Vastberaden, Barmhartig (Valiant, Determined, Compassionate) Location of Amsterdam Coordinates: Country Netherlands Province North Holland Government  - Mayor Job Cohen (PvdA)  - Aldermen Lodewijk Asscher Hennah Buyne Carolien Gehrels Tjeerd Herrema Maarten van Poelgeest Marijke Vos  - Secretary Erik Gerritsen Area [1][2]  - City 219 km²  (84. ... Mathematical economics is the sub-field of economics that explores the mathematical aspects of economic systems. ... Econometrics literally means economic measurement. It is a combination of mathematical economics and statistics. ... A graph of a Normal bell curve showing statistics used in educational assessment and comparing various grading methods. ...

Koopmans moved to the United States in 1940. There he worked for a while for a government body in Washington D.C., where he published on the economics of transportation focusing on optimal routing, then moved to Chicago where he joined a research body affiliated with the University of Chicago. In 1946, he became a naturalized citizen of the United States. In 1955, he moved to Yale University where he continued to publish, now on the economics of optimal growth and activity analysis. This article or section does not cite any references or sources. ... Aerial photo (looking NW) of the Washington Monument and the White House in Washington, DC. Washington, D.C., officially the District of Columbia (also known as D.C.; Washington; the Nations Capital; the District; and, historically, the Federal City) is the capital city and administrative district of the United... Transport economics is a cross-disciplinary study linking civil engineering and economics. ... Nickname: Motto: Urbs In Horto (Latin: City in a Garden), I Will Location in the Chicago metro area and Illinois Coordinates: Country United States State Illinois County Cook & DuPage Incorporated March 4, 1837 Government  - Mayor Richard M. Daley (D) Area  - City  234. ... The University of Chicago is a private university located principally in the Hyde Park neighborhood of Chicago. ... 1946 (MCMXLVI) was a common year starting on Tuesday. ... Naturalization is the process whereby a person becomes a national of a nation, or a citizen of a country, other than the one of his birth. ... “Yale” redirects here. ...

Koopmans' early works on the Hartree-Fock theory are associated to the Koopmans' theorem, which is very well known in quantum chemistry. Koopmans was awarded his Prize (jointly with Leonid Kantorovich) for his contributions to the field of resource allocation, specifically the theory of optimal use of resources. The work for which the prize was awarded focused on activity analysis, the study of interactions between the inputs and outputs of production, and their relationship to economic efficiency and prices. In computational physics and computational chemistry, the Hartree-Fock (HF) or self-consistent field (SCF) calculation scheme is a self-consistent iterative variational procedure to calculate the Slater determinant (or the molecular orbitals which it is made of) for which the expectation value of the electronic molecular Hamiltonian is minimum. ... Koopmans theorem is an approximation in molecular orbital theory, such as density functional theory, or Hartree-Fock theory, in which the first ionization energy of a molecule is equal to the energy of the highest occupied molecular orbital (the HOMO), and the electron affinity is the negative of the energy... Quantum chemistry is a branch of theoretical chemistry, which applies quantum mechanics and quantum field theory to address issues and problems in chemistry. ... There are several measures of economic efficiency: Pareto efficiency Kaldor-Hicks efficiency X-efficiency Allocative efficiency For applications of these principles see: Efficient market hypothesis Welfare economics Production theory basics See also Business efficiency Inefficiency ... For people whose family name is Price see Price (disambiguation). ...

External links

• Nobel autobiography
• Obituary - Boston Globe
• Tjalling Charles Koopmans nació en Gravelinas, Holanda.
• Biographical memoir by Herbert Scarf