Combining Texts
Ideas for
'fragments/reports', 'Letters to Blijenburgh' and 'Introduction to 'Absolute Generality''
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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 / 2. Domain of Quantification
13449
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We could have unrestricted quantification without having an all-inclusive domain [Rayo/Uzquiano]
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13450
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Absolute generality is impossible, if there are indefinitely extensible concepts like sets and ordinals [Rayo/Uzquiano]
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5. Theory of Logic / G. Quantification / 5. Second-Order Quantification
13453
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Perhaps second-order quantifications cover concepts of objects, rather than plain objects [Rayo/Uzquiano]
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