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On This Day

  • 8-5-1775

    Montucla served as Royal Censor and anonymous editor for a new edition of Jacques Ozanam's book on mathematical recreations. The first edition had been published in 1694.

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    Jean Montucla
    Jacques Ozanam
  • 8-5-1802

    Neils Henrik Abel born in Stavanger, Norway. Before going to university in 1821, he attacked the problem of the solution of the quintic equation. He submitted a solution for publication but found an error before it was published. In 1823 he proved the impossibility of a radical expression that solves fifth or higher degree equations.

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    Niels Henrik Abel
    Abel-Ruffini Theorem
  • 8-5-1910

    Julius Petersen died in Copenhagen, Denmark. Best known for the Petersen graph, he worked in graph theory and geometry.

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    Julius Petersen