Jean Leray

Jean Leray ( born November 7, 1906 in Chantenay -sur -Loire (now part of Nantes), † November 10, 1998 in La Baule, Loire -Atlantique ) was a French mathematician. His name is known mainly results in the topology and functional analysis.

Life

Leray studied from 1926 at the ENS Paris, and received his doctorate in 1933 at Henri Villat. In 1932 he married Marguerite Trumier, with whom he had three children.

1934 published Leray together with Juliusz Schauder a work on topology and partial differential equations, in which they defined the leray - Schauder mapping degree. In the same year he published results on the existence and uniqueness of regular solutions of the Navier -Stokes equations, which are leading the way to this day. He showed the existence of so-called weak solutions in two dimensions (the case of three dimensions is still open and one of the Millennium problems). Leray was in 1936 Professor Nancy. In the years 1940 to 1945 he was a prisoner of war in Edelsbach in Austria, where he worked at a school for his fellow prisoners and it had both the ideas of spectral sequences in topology as well as for the sheaf theory. The set of Leray for the determination of Garbenkohomologiegruppen is associated with his name. 1947-1978 he was a professor at the Collège de France in Paris.

In 1979 he was awarded the Wolf Prize. In 1971 he received the Feltrinelli Prize and 1988, the Lomonosov Gold Medal. He was commander of the Legion of Honour. In 1967 he became an honorary doctorate from the University of Chicago.

In 1953, Leray was a member of the Académie des sciences in 1965 a member of the National Academy of Sciences and in 1966 a member of the Soviet Academy of Sciences. He was also a Fellow of the Royal Society, a member of the Belgian Royal Academy of Sciences, the Accademia dei Lincei, Milan, Turin, Göttingen Academy of Sciences and the Polish Academy of Sciences.

Writings

• Leray Étude de diverses équations intégrales non linéaires et de quelques problèmes que l' pose hydrodynamique, Dissertation 1933
• Leray Sur le mouvement d'un liquid visqueux emplissant l' espace, Acta Mathematica, Volume 63, 1934, pp. 193-248
• Leray, shudder topology et équations fonctionnelles, Annales Scientifiques de l' École Normale Supérieure, Sér. 3, Volume 51, 1934, pp. 45-78
• Lagrangian Analysis and quantum mechanics, MIT Press 1981