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Ideas for 'fragments/reports', 'Intro to III: Quantifiers' and 'Maxims'

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4 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 / D. Assumptions for Logic / 2. Excluded Middle

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

5. Theory of Logic / G. Quantification / 4. Substitutional Quantification

9465	Substitutional universal quantification retains truth for substitution of terms of the same type [Jacquette]

9466	Nominalists like substitutional quantification to avoid the metaphysics of objects [Jacquette]