When1: 1951
Who: Jan Lukasiewicz [Lukasiewicz, Jan]
What: mathematician/philosopher
Where: Poland
works\ Aristotle's Syllogistic from the Standpoint of Modern Formal Logic [1951]
Detail: He lived 1878 to 1956. Three-value logic allows true, false, and possible. It can account for future contingencies. Polish mathematical notation needs no brackets.
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Date Modified: 2022.0224