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'fragments/reports', 'New System and Explanation of New System' and 'Nihilism without Self-Contradiction'
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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 / 6. Plural Quantification
14232
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We normally formalise 'There are Fs' with singular quantification and predication, but this may be wrong [Liggins]
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