Jean Favard
Jean Favard (born August 28, 1902 in Peyrat-la-Nonière , † January 21, 1965 in La Tronche ) was a French mathematician who dealt with analysis ( interpolation , approximation , harmonic analysis ).
Favard studied mathematics and physics from 1921 at the École normal supérieure and the Sorbonne . After the Agrégation in 1924 he worked with Harald Bohr in Copenhagen and received his doctorate in Paris in 1927 with a dissertation on almost periodic functions. In 1928 he was Chargé de Cours in Grenoble and in 1929 he held the Cours Peccot at the Collège de France . He was then maitre de conférences in Algiers and in 1933 in Grenoble, where he became professor in 1935. During the Second World War he was an artillery officer and a prisoner of war in Linz, where he was rector of a camp university. In 1941 he was appointed maitre de conference at the Sorbonne, but he was only able to take up the post after the war. In 1950 he became a professor for mechanics and in 1958 for geometry. He was also from 1953 Maitre de conférences and 1957 Professor of Analysis at the École polytechnique .
In 1946 he was president of the Société mathématique de France . In 1938 he received the Academie des Sciences' grand prize in mathematics.
The theorem of Naum Ilyich Achijeser , Mark Grigorjewitsch Kerin and Favard gives limits for the approximation of periodic functions by trigonometric polynomials (in this context a constant is named after them). Favard's theorem (1935, sometimes also named after J. Shohat) about orthogonal polynomials and Favard operators in functional analysis is named after him.
He was an officer in the Legion of Honor.
His son Pierre Favard was a biology professor at the Sorbonne.
Fonts
- Leçons sur les fonctions presque périodiques , Gauthier-Villars 1933.
- Les Théorèmes de la moyenne pour les polynômes , Hermann 1935.
- Cours de géométrie différentielle locale , Gauthier-Villars, 1957.
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Cours d'analysis de l'École polytechnique , Gauthier-Villars, 3 volumes:
- Volume 1, Introduction. Operations. 1960,
- Volume 2, Representation. Fonctions analytiques, 1960,
- Volume 3, Théorie des equations.
- Part 1. Equations différentielles, 1962,
- Part 2. Equations aux dérivés partial. Equations intégrales. Calcul des variations, 1963.
- Théorie de l'information. Langage. Codage. Cryptage , Service de la Présid. du Conseil, 1960.
In 1949 he published the 7th edition of the Cours d'Analysis by Édouard Goursat .
literature
- Marc Zamansky: Obituary in L´Enseignment mathématique, Volume 11, 1965, H. 2/3
Web links
| personal data | |
|---|---|
| SURNAME | Favard, Jean |
| BRIEF DESCRIPTION | French mathematician |
| DATE OF BIRTH | August 28, 1902 |
| PLACE OF BIRTH | Peyrat-la-Nonière |
| DATE OF DEATH | January 21, 1965 |
| Place of death | La Tronche |