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German mathematician, best known for two theorems (1905-1980).
Born December 9th, 1905 in Prusinowice, Opole Voivodeship.
Died December 31st, 1980 at 75 years old in Laufen. [ref]
As you get older, three things happen: The first is your memory goes, and I can't remember the other two. Norman Wisdom