Andreu MasColell  

Councillor of Economy and Knowledge of Catalonia  
In office 29 December 2010 – 14 January 2016  
Prime Minister  Artur Mas 
Preceded by  Antoni Castells (Economy) Josep Huguet (Innovation and Universities) 
Succeeded by  Oriol Junqueras 
Minister of Universities, Research and the Information Society of Catalonia  
In office 3 April 2000 – 17 December 2003  
President  Jordi Pujol 
Succeeded by  Carles Solà 
Personal details  
Born  Andreu MasColell 29 June 1944 Barcelona, Catalonia, Spain 
Political party  CDC (2012–2016) 
Children  Alexandre Mas 
Profession  Economist Professor 
Academic career  
Field  Microeconomics 
Institution  Pompeu Fabra University 
Alma mater  University of MinnesotaMinneapolis 
Doctoral advisor  Marcel Kessel Richter 
Doctoral students  Timothy Kehoe Eddie Dekel Mathias Dewatripont Atsushi Kajii Roberto Serrano Antoni CalvóArmengol 
Information at IDEAS / RePEc  
Andreu MasColell (Catalan: [ənˈdɾew ˈmas kuˈleʎ]; born 29 June 1944) is an economist, an expert in microeconomics and a prominent mathematical economist.^{[1]} He is the founder of the Barcelona Graduate School of Economics and a professor in the department of economics at Pompeu Fabra University in Barcelona, Catalonia, Spain. He has also served several times in the cabinet of the Catalan government.^{[2]}^{[3]}^{[4]}^{[5]} Summarizing his and others' research in general equilibrium theory, his monograph gave a thorough exposition of research using differential topology.^{[6]}^{[7]} His textbook Microeconomic Theory, coauthored with Michael Whinston and Jerry Green, is the most used graduate microeconomics textbook in the world.^{[8]}
In June 2021, Spain’s Court of Auditors found that he was among those responsible for government expenditure on the unconstitutional 2017 Catalan independence referendum, and announced its intention to fine him millions of euros; one member of the court dissented, and an outcry from economists followed.^{[9]}
A native of Barcelona,^{[1]} MasColell completed his undergraduate studies at the University of Barcelona, earning a degree in economics in 1966. He moved to the University of Minnesota for his graduate studies, and completed his Ph.D. in 1972 under the supervision of Marcel Richter.^{[10]} He took a faculty position in mathematics and economics at the University of California, Berkeley, becoming a full professor in 1979. In 1981, he moved to Harvard University, and in 1988 he became the Louis Berkman Professor of Economics at Harvard.^{[2]}^{[3]}^{[4]}^{[5]} In 1995 he moved to Pompeu Fabra to lead the Department of Economics and Business.^{[1]} He was editorinchief of the Journal of Mathematical Economics from 1985 to 1989, and of Econometrica from 1988 to 1998. He was president of the Econometric Society in 1993 and of the European Economic Association in 2006.^{[2]}^{[3]}^{[5]}
In public service, MasColell was the Commissioner for Universities and Research of the Generalitat of Catalonia in 1999–2000.^{[2]}^{[3]}^{[4]}^{[5]} While Minister of Universities, Research and the Information Society for the Generalitat from 2000 to 2003, MasColell implemented a research institution called Catalan Institution for Research and Advanced Studies (ICREA)^{[11]} to attract topnotch scientists in all fields of knowledge, from philosophers to astrophysicists, to perform their research in 50 different host institutions in Catalonia. MasColell served the Secretary General of the European Research Council from 2009 to 2010.^{[2]}^{[3]}^{[4]}^{[5]} In the Catalonia Government from 20102016, presided by Artur Mas, he was appointed as the Councillor for Economy and Knowledge, being responsible for the government's budget, economic policy, and research policy.^{[4]}
Spain’s Court of Auditors in June 2021 held MasColell and several former colleagues in the Catalan government responsible for the mismanagement of €4.8m in support of Catalan independence. Paul Romer, a Nobel prizewinner in economics, said that the procedure appeared to be ‘not justice but politics by other means.’ One member of the tribunal voted against the decision.^{[9]}
MasColell's research has ranged broadly over mathematical economics. In particular, he has been associated with a revival of the use of differential calculus (in the form of "global analysis") at the highest levels of mathematical economics. Following John von Neumann's breakthroughs in economics, and particularly after his introduction of functional analysis and topology into economic theory, advanced mathematical economics reduced its emphasis on differential calculus. In general equilibrium theory, mathematical economists used general topology, convex geometry, and optimization theory more than differential calculus.^{[12]} In the 1960s and 1970s, however, Gérard Debreu and Stephen Smale led a revival of the use of differential calculus in mathematical economics. In particular, they were able to prove the existence of a general equilibrium, where earlier writers had failed, through the use of their novel mathematics: Baire category from general topology and Sard's lemma from differential topology and differential geometry. Their publications initiated a period of research "characterized by the use of elementary differential topology": "almost every area in economic theory where the differential approach has been pursued, including general equilibrium" was covered by MasColell's monograph on differentiable analysis and economics.^{[6]} MasColell's book "offers a synthetic and thorough account of a major recent development in general equilibrium analysis, namely, the largely successful reconstruction of the theory using modern ideas of differential topology", according to its back cover.^{[13]}
MasColell has also contributed to the theory of general equilibrium in topological vector lattices.^{[14]} The sets of prices and quantities can be described as partially ordered vector spaces, often as vector lattices. Economies with uncertain or dynamic decisions typically require that the vector spaces be infinitedimensional, in which case the order properties of vector lattices allow stronger conclusions to be made.^{[15]} Recently researchers have studied nonlinear pricing: A "main motivation came from the fact that MasColell's fundamental theory of welfare economics with no interiority assumptions crucially requires lattice properties of commodity spaces, even in finitedimensional settings."^{[16]}
MasColell is the author or coauthor of:
MasColell is a foreign associate of the United States National Academy of Sciences, a foreign honorary member of the American Economic Association, a fellow of the American Academy of Arts and Sciences, a member of the Academia Europaea, a member of the Institute of Catalan Studies, a fellow of the Real Academia de Ciencias Morales y Políticas, and a fellow of the Econometric Society. He has received honorary doctorates from the University of Alicante in Spain, the University of Toulouse and HEC Paris in France, the National University of the South in Argentina, and the University of Chicago in the United States.^{[18]} He is a recipient of the Creu de Sant Jordi, the highest civil honor of Catalonia, and of the King Juan Carlos Prize in Economics.^{[2]}^{[3]}^{[4]}^{[5]}
Also he has received the 2009 BBVA Foundation Frontiers of Knowledge Award in Economy, Finance and Management (cowinner with Hugo F. Sonnenschein).
In honor of his 65th birthday and his service on the European Research Council, two conferences were held in his honor at Pompeu Fabra in 2009, the Journal of Mathematical Economics published a special issue in his honor, and he was awarded the Medal of Honor of the university.^{[5]}
Seventh Jordi Pujol cabinet (November 29, 1999 – January 17, 2001)  

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Eighth Jordi Pujol cabinet (January 17, 2001 – November 4, 2002)  

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Ninth Jordi Pujol cabinet (November 4, 2002 – December 17, 2003)  

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