Giulio Carlo de' Toschi di Fagnano

Giulio Carlo di Fagnano
FRS
Portrait of Fagnano
Born(1682-09-26)26 September 1682
Senigallia, Papal States
Died18 May 1766(1766-05-18) (aged 83)
Senigallia, Papal States
EducationCollegio Clementino, Rome
Occupations
  • Mathematician
  • Civil servant
Known forDiscovery of addition and multiplication formulas for arcs of lemniscate
Spouse
Francesca Conciatti
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(m. 1705; died 1726)​
ChildrenGiovanni Fagnano
AwardsForMemRS (1723)
Scientific career
FieldsMathematics

Giulio Carlo, Count Fagnano, Marquis de Toschi (26 September 1682 — 18 May 1766) was an Italian mathematician. He was probably the first to direct attention to the theory of elliptic integrals. Fagnano’s work is considered the forerunner of the theory of elliptic functions.

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