# Mathematician:Alexis Fontaine des Bertins

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## Mathematician

French mathematician who contributed to some of the early work on differential equations.

Credited with inventing the technique (independently of Leonhard Paul Euler and Alexis Claude Clairaut) of the use of integrating factors.

Did much of his work independently of others, and questions of precedence arose as a result.

## Nationality

French

## History

- Born: 13 August 1704 in Claveyson, Drôme, France
- 1733: Elected a member of the Académie des sciences
- Died: 21 August 1771 in Cuiseaux, Saône-et-Loire, France

## Publications

- 1764:
*Mémoires donnés à l'Académie royale des sciences, non imprimés dans leur temps* - 1770:
*Traité de calcul différentiel et intégral*

## Also known as

Often referred to as **Alexis Fontaine**, but it is wise to retain the **des Bertins** in order to distinguish him from the more recent Jean-Marc Fontaine.