Combining Texts

All the ideas for 'Science and Method', 'Letters to Wolff' 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]

6. Mathematics / A. Nature of Mathematics / 2. Geometry

10245

One geometry cannot be more true than another [Poincaré]

9. Objects / D. Essence of Objects / 9. Essence and Properties

13191

The properties of a thing flow from its essence [Leibniz]