# Augustin-Louis Cauchy

Baron **Augustin-Louis Cauchy** FRS FRSE (/koʊˈʃiː/, *koh-SHEE*;[1] French: [oɡystɛ̃ lwi koʃi]; 21 August 1789 – 23 May 1857) was a French mathematician, engineer, and physicist who made pioneering contributions to several branches of mathematics, including mathematical analysis and continuum mechanics. He was one of the first to state and rigorously prove theorems of calculus, rejecting the heuristic principle of the generality of algebra of earlier authors. He almost singlehandedly founded complex analysis and the study of permutation groups in abstract algebra.

Augustin-Louis Cauchy | |
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Born | |

Died | 23 May 1857 67) | (aged

Nationality | French |

Alma mater | École Nationale des Ponts et Chaussées |

Known for | Continuum mechanics Mathematical analysis Gradient descent Implicit function theorem Intermediate value theorem Spectral theorem Limit (mathematics) See full list |

Spouse | 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 |

A profound mathematician, Cauchy had a great influence over his contemporaries and successors;[2] Hans Freudenthal stated: "More concepts and theorems have been named for Cauchy than for any other mathematician (in elasticity alone there are sixteen concepts and theorems named for Cauchy)."[3] Cauchy was a prolific writer; he wrote approximately eight hundred research articles and five complete textbooks on a variety of topics in the fields of mathematics and mathematical physics.