Beniamino Segre

Beniamino Segre ( born February 16, 1903 in Turin, † 22 October 1977 in Frascati ) was an Italian mathematician who worked mainly 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 Giuseppe Peano, Guido Fubini, Gino Fano and Corrado Segre (who was only distantly related to him). In 1923 he received his doctorate at Corrado Segre, stayed for a while as an assistant professor in Turin in 1926 and then studied with a Rockefeller Fellowship at Elie Cartan in Paris. After a period as assistant to Francesco Severi in Rome ( of there the Italian school of algebraic geometry with Federigo Enriques and Guido Castelnuovo led ) he was in 1931 professor in Bologna, but lost in 1938 as a Jew his professorship and went to England, where, after a internment in 1942 employment in Manchester found as " Enemy aliens " at Louis Mordell, who had helped many emigrated mathematicians. In 1946 he became a professor in Bologna and again in 1950 in the wake of Francesco Severi professor in Rome.

Segre engaged in various fields of geometry, such as algebraic geometry or combinatorial questions of geometry over finite fields ( Galoiskörpern ), beginning with his work Sulle ovali nei piani linearized finiti ( About ovals in finite projective planes ) in the Atti di Accademia dei Lincei in 1954 (English in the Canadian Journal of Mathematics, 1955), in which he characterizes the irreducible conics in a finite projective Desargues plane of odd order (→ set of Segre ).

Segre was a member of the Accademia dei Lincei and twice its president. He gave a plenary lecture at the ICM 1954 in Amsterdam ( on Geometry of algebraic variety ), the 1958 Invited Speaker at the ICM in Edinburgh (On Galois Geometries ) and 1950 in Cambridge (Massachusetts ) ( Arithmetical properties of algebraic varieties ).

The " Centro Linceo interdisciplinare " of the Accademia dei Lincei is named after him.

Writings

  • Opere Scelte. (Works), 3 vols, Rome, Edizioni Cremonese, 1987, 2000.
  • Arithmetical Questions on Algebraic Varieties. In 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.
October 22 Italy Élie Cartan Cambridge (Massachusetts) Integrated Authority File
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