Combining Texts
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'fragments/reports', 'On the Frame of Reference' and 'Truthmakers, Realism and Ontology'
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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
6023
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Every proposition is either true or false [Chrysippus, by Cicero]
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5. Theory of Logic / G. Quantification / 4. Substitutional Quantification
10009
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Substitutional quantification is just a variant of Tarski's account [Wallace, by Baldwin]
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