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Ideas for 'fragments/reports', 'Essay Conc Human Understanding (2nd Ed)' and 'Propositions'

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5 ideas

5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens

8078	Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]

5. Theory of Logic / C. Ontology of Logic / 3. If-Thenism

10055

Mathematical proofs work, irrespective of whether the objects exist [Locke]

5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle

6023	Every proposition is either true or false [Chrysippus, by Cicero]

5. Theory of Logic / F. Referring in Logic / 1. Naming / b. Names as descriptive

9455	Maybe proper names have the content of fixing a thing's category [Bealer]

5. Theory of Logic / F. Referring in Logic / 2. Descriptions / b. Definite descriptions

9454	The four leading theories of definite descriptions are Frege's, Russell's, Evans's, and Prior's [Bealer]