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Augustin-Louis Cauchy
Augustin-Louis Cauchy 1901.jpg
Cauchy around 1840. Lithography by Zéphirin Belliard after a painting by Jean Roller.
Born (1789-08-21)21 August 1789
Died 23 May 1857(1857-05-23) (aged 67)
Sceaux, France
Nationality French
Alma mater École Nationale des Ponts et Chaussées
Known for See list
Spouse(s) Aloise de Bure
Children Marie Françoise Alicia, Marie Mathilde
Awards Grand Prize of L'Académie Royale des Sciences
Scientific career
Fields Mathematics, Physics
Institutions École Centrale du Panthéon
École Nationale des Ponts et Chaussées
École Polytechnique
Doctoral students Francesco Faà di Bruno
Viktor Bunyakovsky

Augustin-Louis Cauchy (21 August 1789 – 23 May 1857) was a French mathematician and physicist who made many important contributions to mathematical analysis and mathematical physics. (including elasticity) Importantly, he created complex analysis, which studies complex functions and their properties.

Cauchy did not like mathematicians making assumptions, and he particularly did not like the way that earlier mathematicians, such as Euler and Lagrange, assumed that properties of finite expansions, meaning that we can count the number of terms, also worked for infinite series. Cauchy was able to give examples of where this did not work, and called the assumptions that the earlier mathematicians made, the generality of algebra.

More theorems have been named after Cauchy than any other mathematician in history.

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