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On This Day

  • 10-1-1658

    Pascal's prize for cycloids. Today was the closing date for submitting solutions to Pascal's prize problems on the cycloid. A toothache earlier that year caused him to return to mathematics and to study the cycloid.

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    Blaise Pascal
  • 10-1-1671

    Guido Grandi born in Cremona, Italy. He is noted for the curves known as roses, which he introduced using polar coordinates and which are still part of our calculus courses.

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    Guido Grandi
    Rose Curves
  • 10-1-1996

    Seifert died in Heidelberg, Germany. The famous topologist worked during much of his long career with his first teacher of topology, William Threlfell.

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    Herbert Seifert