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On This Day

  • 9-17-1743

    Condorcet born in Ribemont, France. Best known for his work in probability and decision-making, he died in a Paris prison in 1794 under mysterious circumstances.

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    Marquis de Condorcet
  • 9-17-1826

    Bernhard Riemann born in Hanover, Germany. Most famous for Riemannian space and the Riemann integral, he was a student of Eisenstein, Dirichlet, and Gauss.

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    Bernhard Riemann
  • 9-17-1905

    Hans Freudenthal born in Luckenwalde, Germany. He worked in algebra, analysis, and topology, and wrote many biographies for the Dictionary of Scientific Biography.

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    Hans Freudenthal

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