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On This Day ...

Important events from the history of math that happened on this day:

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July 17th

1879 Nature announced that Kempe had proved the Four Color Conjecture. A correct proof, based on Kempe's attempt, had to wait another century.

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Alfred Kempe
Four Color Theorem
1912 Henri Poincare died in Paris, France. He founded the fields of algebraic topology and of analytic functions of several complex variables.

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Jules Henri Poincare
1935 The Scottish Book's first entry. The first problem was entered into the large bound notebook that Banach brought to the Scottish Cafe in Lwow, Poland, for mathematicians to record research problems. Many of the problems offered prizes to the solver. They ranged from "5 small beers" to "100 grammes of caviar." This book has been translated into English and edited by R. D. Mauldin.

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The Scottish Book
1993 Adolph Pavlovich Yushkevich, mathematician and historian of mathematics, died in Moscow, Russia.

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Adolph Pavlovich Yushkevich

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