Beniamino Segre (16 February 1903-2 October 1977) was an Italian mathematician who is remembered today as a major contributor to algebraic geometry and one of the founders of combinatorial geometry. Events 1249 - Andrew of Longjumeau is dispatched by Louis IX of France as his ambassador to meet with the Khan of the Mongols Year 1903 ( MCMIII) was a Common year starting on Thursday (link will display calendar of the Gregorian calendar or a Common year starting Events 1187 - Siege of Jerusalem: Saladin captures Jerusalem after 88 years of Crusader rule Also 1977 (album by Ash. Year 1977 ( MCMLXXVII) was a Common year starting on Saturday (link displays Algebraic geometry is a branch of Mathematics which as the name suggests combines techniques of Abstract algebra, especially Commutative algebra, with Discrete geometry or combinatorial geometry may be loosely defined as study of geometrical objects and properties that are discrete or Combinatorial, either He was born and studied in Turin. His main contributions to algebraic geometry concerned birational invariants of algebraic varieties, and the investigation of singularities. This work was in the style of the old Italian School, although he also appreciated the need for greater rigour characteristic of modern algebraic geometry. But his more original contribution was the introduction of finite and non-continuous structures into geometry. In his best known paper (On ovals in finite projective planes, 1954) he proved the following theorem: In a Desarguesian plane of odd order, the ovals are exactly the irreducible conics. In Finite geometry a Desarguesian plane, named after Gérard Desargues, is a plane in which Desargues' theorem holds In geometry an oval or ovoid (from Latin ovum, 'egg' is any Curve resembling an egg or an Ellipse. Some critics felt that his work was no longer geometry, but today it is recognized as a separate subdiscipline: combinatorial geometry.
In 1938 he lost his professorship as a result of the anti-Jewish laws enacted under Mussolini's government; he spent the next 8 years in Great Britain, then returned to Italy to resume his academic career.
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References
- Tallini, Giuseppe. In relation with the history of Mathematics, the Italian school of Algebraic geometry refers to the work over half a century or more (flourishing roughly 1885-1935 Beniamino Segre. Acta Arithmetica. Retrieved on December 25, 2005. Events 274 - Roman Emperor Aurelian Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar.
- Vesentini, Edoardo. Beniamino Segre and Italian Geometry. Rendiconti di Matematica. Retrieved on January 2, 2006. Events 366 - The Alamanni cross the frozen Rhine River in large numbers invading the Roman Empire. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar.
- O'Connor, John J. & Robertson, Edmund F. , “Beniamino Segre”, MacTutor History of Mathematics archive
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