Combining Texts

All the ideas for 'Elements of Mathematical Logic', 'On the Syllogism IV' and 'Repetition'

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5 ideas

3. Truth / A. Truth Problems / 8. Subjective Truth

22094

Subjective truth can only be sustained by repetition [Kierkegaard, by Carlisle]

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') [Lukasiewicz, by Fisher]

5. Theory of Logic / E. Structures of Logic / 6. Relations in Logic

17744

De Morgan started the study of relations and their properties [De Morgan, by Walicki]

13501

De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD]

23. Ethics / F. Existentialism / 8. Eternal Recurrence

22093

Life is a repetition when what has been now becomes [Kierkegaard]