Combining Texts
Ideas for
'fragments/reports', 'The Psychophysical Nexus' and 'Second Philosophy'
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3 ideas
5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic
10594
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Henkin semantics is more plausible for plural logic than for second-order logic [Maddy]
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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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