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On This Day

  • 7-19-1799

    Rosetta stone found by Napoleon's troops in the Nile Delta. It attracted the interest of the learned men with Napoleon, including several mathematicians, and copies were circulated to scholars. The text is in Greek, hieroglyphics, and demotic Egyptian scripts and was deciphered by Thomas Young and Francois Champollion. The cartouches on the stone, which contained royal names, were the key to decipherment. It is now a prized possession of the British Museum.

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    The Rosetta Stone
    Napoleon Bonaparte
    The British Museum
  • 7-19-1817

    Charles Briot born in St. Hippolyte, France. He worked on the theory of functions, including elliptic functions, heat, light, and electricity.

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    Charles Auguste Briot
  • 7-19-1878

    Egor Ivanovich Zolotarev died in St. Petersburg, Russia, after falling under a train. He did groundbreaking work in number theory during a short career of about 11 years.

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    Egor Ivanovich Zolotarev