Combining Texts
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'fragments/reports', 'Reality and Representation' and 'Basic Problems of Phenomenology'
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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 / C. Ontology of Logic / 2. Platonism in Logic
15571
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The idea of an atemporal realm of validity is as implausible as medieval theology [Heidegger]
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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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