Combining Texts
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'fragments/reports', 'Law, Pragmatism and Democracy' and 'Reasoning and the Logic of Things'
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5 ideas
5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=
19237
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Deduction is true when the premises facts necessarily make the conclusion fact true [Peirce]
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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 / C. Ontology of Logic / 1. Ontology of Logic
19256
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Our research always hopes that reality embodies the logic we are employing [Peirce]
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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 / E. Structures of Logic / 6. Relations in Logic
19238
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The logic of relatives relies on objects built of any relations (rather than on classes) [Peirce]
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