# Richard Courant

## German-American mathematician (1888–1972) / From Wikipedia, the free encyclopedia

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**Richard Courant** (January 8, 1888 – January 27, 1972) was a German-American mathematician. He is best known by the general public for the book *What is Mathematics?*, co-written with Herbert Robbins. His research focused on the areas of real analysis, mathematical physics, the calculus of variations and partial differential equations. He wrote textbooks widely used by generations of students of physics and mathematics. He is also known for founding the institute now bearing his name.

**Quick Facts**Born, Died ...

Richard Courant | |
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Born | (1888-01-08)January 8, 1888 |

Died | January 27, 1972(1972-01-27) (aged 84) New Rochelle, New York, United States |

Citizenship | Germany United States |

Alma mater | University of Zurich University of Göttingen |

Known for | Courant number Courant minimax principle Courant–Friedrichs–Lewy condition Courant's nodal domain theorem ^{[1]} |

Scientific career | |

Fields | Mathematics |

Institutions | University of Göttingen University of Münster University of Cambridge New York University |

Thesis | On the application of Dirichlet's principle to the problems of conformal mapping (1910) |

Doctoral advisor | David Hilbert |

Doctoral students | Leifur Ásgeirsson Herbert Busemann William Feller Kurt Friedrichs Harold Grad Fritz John Joseph Keller Edgar Krahn Martin Kruskal Anneli Lax Hans Lewy Otto Neugebauer Franz Rellich |

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