# Bernard Koopman

**Bernard Osgood Koopman** (January 19, 1900 – August 18, 1981) was a French-born American mathematician, known for his work in ergodic theory, the foundations of probability, statistical theory and operations research.

Bernard Koopman | |
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Born | January 19, 1900 7th arrondissement of Paris, France |

Died | August 18, 1981 |

Nationality | American |

Alma mater | Harvard University |

Known for | Koopman–von Neumann classical mechanics Koopman Operator Pitman–Koopman–Darmois theorem |

Scientific career | |

Fields | Mathematics |

Institutions | Columbia University |

Doctoral advisor | G. D. Birkhoff |

Doctoral students | Francis J. Murray |