Template:Selected anniversaries/December 21: Difference between revisions

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File:Jan Łukasiewicz.jpg|link=Jan Łukasiewicz (nonfiction)|1878: Mathematician and philosopher [[Jan Łukasiewicz (nonfiction)|Jan Łukasiewicz]] born.  He will think innovatively about traditional propositional logic, the principle of non-contradiction and the law of excluded middle.
File:Jan Łukasiewicz.jpg|link=Jan Łukasiewicz (nonfiction)|1878: Mathematician and philosopher [[Jan Łukasiewicz (nonfiction)|Jan Łukasiewicz]] born.  He will think innovatively about traditional propositional logic, the principle of non-contradiction and the law of excluded middle.
||Sewall Green Wright (December 21, 1889 – March 3, 1988) was an American geneticist known for his influential work on evolutionary theory and also for his work on path analysis.
File:Crossword.png|link=Crossword (nonfiction)|1913: Arthur Wynne's "word-cross", the first [[Crossword (nonfiction)|crossword puzzle]], is published in the ''New York World''.
File:Crossword.png|link=Crossword (nonfiction)|1913: Arthur Wynne's "word-cross", the first [[Crossword (nonfiction)|crossword puzzle]], is published in the ''New York World''.
File:Voronoi-diagram-color-commentators.jpg|link=Fantasy Voronoi diagram|1974: [[Fantasy Voronoi diagram]] upstages [[Fantasy football (American) (nonfiction)|Fantasy Football]].
File:Voronoi-diagram-color-commentators.jpg|link=Fantasy Voronoi diagram|1974: [[Fantasy Voronoi diagram]] upstages [[Fantasy football (American) (nonfiction)|Fantasy Football]].

Revision as of 18:12, 24 July 2017