Combining Texts

Ideas for 'The Nature of Things', 'Reference and Modality' and 'Elements of Mathematical Logic'

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3 ideas

4. Formal Logic / D. Modal Logic ML / 1. Modal Logic

10928

Maybe we can quantify modally if the objects are intensional, but it seems unlikely [Quine]

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]

4. Formal Logic / F. Set Theory ST / 7. Natural Sets

9406	A class is natural when everybody can spot further members of it [Quinton]