Combining Texts
Ideas for
'fragments/reports', 'Introduction to Russell's Theory of Types' and 'Intros to Russell's 'Essays in Analysis''
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4 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 / L. Paradox / 5. Paradoxes in Set Theory / b. Cantor's paradox
21554
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Sets always exceed terms, so all the sets must exceed all the sets [Lackey]
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5. Theory of Logic / L. Paradox / 5. Paradoxes in Set Theory / c. Burali-Forti's paradox
21553
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It seems that the ordinal number of all the ordinals must be bigger than itself [Lackey]
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