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On This Day

  • 4-15-1446

    Filippo Brunelleschi died in Florence, Italy. He helped develop the principles of mathematical perspective.

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    Filippo Brunelleschi

  • 4-15-1452

    Leonardo da Vinci born in Vinci, Italy. The famous inventor and artist also enjoyed geometry.

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    Leonardo da Vinci

  • 4-15-1707

    Leonhard Euler born in Basel, Switzerland. He was the most prolific mathematician of all time. His collected works, still only partly published, comprise over 75 large volumes.

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    Leonhard Euler
    Using the Euler Archive

  • 4-15-1968

    Data General Corporation founded. The 1981 Pulitzer Prize winning book, The Soul of a New Machine, describes the development of the company's ECLIPSE computer.

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    Data General