Combining Texts
Ideas for
'fragments/reports', 'How Things Persist' and 'Gdel's Proof'
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3 ideas
5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens
8078
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Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]
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5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
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Every proposition is either true or false [Chrysippus, by Cicero]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / b. Names as descriptive
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Part of the sense of a proper name is a criterion of the thing's identity [Hawley]
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