Gérard Debreu was a French-born economist and mathematician. Best known as a professor of economics at the University of California, Berkeley, where he began work in 1962, he won the 1983 Nobel Memorial Prize in Economic Sciences. The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel 1983, announced October 17, 1983. Gerard Debreu, “for having incorporated new analytical methods into economic theory and for his rigorous reformulation of the theory of general equilibrium”. Gerard Debreu: born 1921, Calais, France. Wiki link Data: the Nobel Foundation (CC0).