Combining Texts

All the ideas for 'Leibniz', 'Metaphysical Foundations of Mathematics' and 'Elements of Mathematical Logic'

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3 ideas

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]

9. Objects / F. Identity among Objects / 7. Indiscernible Objects

7566	The Identity of Indiscernibles is really the same as the verification principle [Jolley]

27. Natural Reality / D. Time / 2. Passage of Time / g. Time's arrow

22908

When one element contains the grounds of the other, the first one is prior in time [Leibniz]