A notable example of this is the trivalent logic developed by Polish logician and mathematician Jan Łukasiewicz.
The Polish logician and philosopher, Jan Łukasiewicz, began to create systems of many-valued logic in 1920, using a third value, "possible", to deal with Aristotle's paradox of the sea battle.
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Those most popular in the literature are three-valued (e.g., Łukasiewicz's and Kleene's, which accept the values "true", "false", and "unknown"), the finite-valued with more than three values, and the infinite-valued, such as fuzzy logic and probability logic.
Conceptual form and basic ideas were initially created by Jan Łukasiewicz and C. I. Lewis.
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