idea number gives full details.     |    back to list of philosophers     |     expand these ideas

Ideas of Jan Lukasiewicz, by Text

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

1928 Elements of Mathematical Logic
7.I p.94 Lukasiewicz's L3 logic has three truth-values, T, F and I (for 'indeterminate')