Mathematician:Alexis Claude Clairaut

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French mathematician, astronomer and geophysicist. Worked out the shape of the Earth.

Best known in mathematics for Clairaut's (differential) equation.

Credited with inventing the technique (independently of Leonhard Paul Euler and Alexis Fontaine des Bertins) of the use of integrating factors.




  • Born: 7 May 1713, Paris, France
  • Died: 17 May 1765, Paris, France

Theorems and Definitions

Results named for Alexis Claude Clairaut can be found here.

Definitions of concepts named for Alexis Claude Clairaut can be found here.


  • 1726: Quatre Problèmes sur de Nouvelles Courbes (at age 13)
  • 1731: Recherches sur les Courbes a Double Courbure
  • 1733: Sur Quelques Questions de Maximis et Minimis
  • 1741: Elements de Géometrie
  • 1743: Théorie de la Figure de la Terre, Tirée des Principes de l'Hydrostatique
  • 1749: Elements d'Algèbre (used for teaching in French schools for many years)
  • 1752: Théorie de la Lune

Also known as

Sometimes reported as de Clairault.