Frédéric Marty

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Frédéric Ladislas Joseph Marty (born June 23, 1911 in Albi , Tarn , † June 14, 1940 in Helsinki ) was a French mathematician .

Frédéric Marty's father was the mathematician Joseph Marty (1885-1914), who taught at the Lycée d'Albi and was killed as a French officer in World War I.

Frédéric Marty received his doctorate in 1931 from the École normal supérieure . Then he was Maître de conférences in Marseille . He was a lieutenant in the French Air Force during World War II and was a victim of the Kaleva incident when he was diplomatic courier on board a Finnish plane that was shot down by the Soviet Air Force .

In the theory of normal families it is known from Marty's theorem. This theorem from his dissertation says that a family of meromorphic functions is normal if and only if the family of spherical derivatives is locally bounded. Furthermore, Marty established the theory of hypergroups and hyperstructures in several papers. He gave a lecture at the International Congress of Mathematicians (ICM) in Oslo in 1936 .

Individual evidence

  1. Information on Frédéric Marty in the database of the Bibliothèque nationale de France .
  2. ^ Entry in the database of members of the French army who died in World War II
  3. ^ Joseph Marty, pp. 12-16, Notices nécrologiques de normaliens morts à la guerre
  4. see for example Joel Schiff: Normal Families , Springer, 1993, Section 3.3, or WK Hayman , Meromorphic Functions , Oxford, Clarendon Press, 1964, Theorem 6.3
  5. ^ F. Marty: Recherches sur la répartition des valeurs d'une fonction méromorphhe. Annales de la Faculté des Sciences de l'Université de Toulouse pour les Sciences Mathématiques et les Sciences Physiques. 3ième Série, Vol. 23 (1931), pp. 183-261; in particular Chapter I, § 2. Digitization
  6. ^ F. Marty: Sur une généralisation de la notion de groupe. Åttonde skandinaviska matematikerkongressen i Stockholm 14–18 August 1934. Comptes rendus du huitième congrès des mathématiciens scandinaves tenu à Stockholm 14–18 août 1934, pp. 45–49; F. Marty: Rôle de la notion d'hypergroupe dans l'étude des groupes non abeliens. Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences, Paris, Volume 201 (1937), pp. 636-638; F. Marty: Sur les groupes et hypergroupes attachés à une fraction rationnelle . Annales Scientifiques de l'École Normale Supérieure. Troisième Série, Volume 53 (1936), pp. 83-123
  7. see Piergiulio Corsini: History and new possible research directions of hyper structures , Ratio Mathematica, Volume 21 (2011), pp 3-26; on-line