Combining Texts
Ideas for
'fragments/reports', 'Letters to Wagner' and 'Truthmakers and Converse Barcan Formula'
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5 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 / 1. Quantification
18492
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Not all quantification is either objectual or substitutional [Williamson]
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5. Theory of Logic / G. Quantification / 4. Substitutional Quantification
15136
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Substitutional quantification is metaphysical neutral, and equivalent to a disjunction of instances [Williamson]
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5. Theory of Logic / G. Quantification / 7. Unorthodox Quantification
15138
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Not all quantification is objectual or substitutional [Williamson]
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