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Ernst Kummer, Polish-German mathematician and academic (died 1893)

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Ernst Kummer
German mathematician (1810–1893)
Ernst Eduard Kummer was a German mathematician. Skilled in applied mathematics, Kummer trained German army officers in ballistics; afterwards, he taught for 10 years in a gymnasium, the German equivalent of high school, where he inspired the mathematical career of Leopold…Source: Wikipedia (CC BY-SA)
January 29
Day of the year
January 29 is the 29th day of the year in the Gregorian calendar; 336 days remain until the end of the year.Source: Wikipedia (CC BY-SA)