Beniamino Segre

from Wikipedia, the free encyclopedia
Beniamino Segre

Beniamino Segre (born February 16, 1903 in Turin , † October 22, 1977 in Frascati ) was an Italian mathematician who mainly dealt with geometry (algebraic geometry, projective geometry, differential geometry), function theory and combinatorics. He is one of the founders of combinatorial geometry.

Segre studied in Turin with Giuseppe Peano , Guido Fubini , Gino Fano and Corrado Segre (who was only distantly related to him). In 1923 he received his doctorate under Corrado Segre, stayed for a while as an assistant professor in Turin and then studied in 1926 with a Rockefeller scholarship with Élie Cartan in Paris . After a time as assistant to Francesco Severi in Rome (who headed the Italian School of Algebraic Geometry there with Federigo Enriques and Guido Castelnuovo ) he became a professor in Bologna in 1931 , but lost his professorship as a Jew in 1938 and went to England, where he was after a Internment period as “ hostile foreigner ” 1942 found a job in Manchester with Louis Mordell , who had helped many mathematicians who had emigrated. In 1946 he became professor again in Bologna and in 1950 he was professor in Rome, succeeding Francesco Severi .

Segre dealt with the most varied areas of geometry, for example algebraic geometry or combinatorial questions of geometry over finite bodies (Galois bodies), beginning with his work Sulle ovali nei piani lineari finiti (On ovals in finite projective planes) in the Atti di Accademia dei Lincei 1954 (English in Canadian Journal of Mathematics 1955), in which he characterizes the irreducible conic sections in a finite projective Desargues plane of odd order (→ Segre's theorem ).

Segre was a member of the Accademia dei Lincei and twice its president. In 1974 he became a corresponding member of the Académie des Sciences . He gave a plenary lecture at the ICM in 1954 in Amsterdam ( Geometry on an algebraic variety ), was invited speaker at the ICM in Edinburgh in 1958 ( On Galois Geometries ) and in 1950 in Cambridge (Massachusetts) ( Arithmetical properties of algebraic varieties ).

The “Centro Linceo Interdisciplinare” of the Accademia dei Lincei is named after him.

Fonts

  • Opere Scelte. (Works), 3 volumes, Rome, Edizioni Cremonese, 1987, 2000.
  • Arithmetical Questions on Algebraic Varieties. 1951.
  • Lezioni di geometria moderna. 1948, greatly expanded English edition: Lectures on modern geometry. Rome 1961.
  • The non singular cubic surfaces. Clarendon Press, Oxford 1942.

Web links

Individual evidence

  1. ^ List of members since 1666: letter S. Académie des sciences, accessed on February 29, 2020 (French).
personal data
SURNAME Segre, Beniamino
BRIEF DESCRIPTION Italian mathematician
DATE OF BIRTH February 16, 1903
PLACE OF BIRTH Turin
DATE OF DEATH October 22, 1977
Place of death Frascati