Ideas of Jan Lukasiewicz, by Theme

[Polish, 1878 - 1956, Professor at Warsaw University. In Dublin after 1945.]

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4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic

8942	Lukasiewicz's L3 logic has three truth-values, T, F and I (for 'indeterminate') [Fisher]