Mathematician:Henri Léon Lebesgue

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French mathematician famous mainly for his work on the theory of integral calculus.

Not to be confused with Victor-Amédée Lebesgue.




  • Born: June 28, 1875, Beauvais
  • Died: July 26, 1941, Paris

Theorems and Definitions

Results named for Henri Léon Lebesgue can be found here.

Definitions of concepts named for Henri Léon Lebesgue can be found here.


  • 1898: Sur l'approximation des fonctions ("On the approximation of functions")
  • 1901: Sur une généralisation de l'intégrale définie ("On a generalization of the definite integral") (in which the Lebesgue Integral was introduced)
  • 1902: Intégrale, longueur, aire
  • 1904: Leçons sur l'intégration et la recherche des fonctions primitives
  • 1906: Leçons sur les séries trigonométriques
  • 1910: Représentation trigonométrique approchée des fonctions satisfaisant a une condition de Lipschitz ("Trigonometrical representation approaching functions satisfies a condition of Lipschitz")
  • 1922: Notice sur les travaux scientifique de M Henri Lebesgue

Notable Quotes

In my opinion a mathematician, in so far as he is a mathematician, need not preoccupy himself with philosophy -- an opinion, moreover, which has been expressed by many philosophers. (1936)
-- Quoted in 1937: Eric Temple Bell: Men of Mathematics: They Say: What Say They? : Let Them Say

Also known as

His name is sometimes seen rendered as Lebesque, but this appears to be a mistake.

Some sources render his first names as hyphenated: Henri-Léon.