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'fragments/reports', 'On the Philosophy of Logic' and 'Essay on a Problem in the Doctrine of Chances'
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4 ideas
4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic
8077
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Stoic propositional logic is like chemistry - how atoms make molecules, not the innards of atoms [Chrysippus, by Devlin]
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4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL
20791
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Chrysippus has five obvious 'indemonstrables' of reasoning [Chrysippus, by Diog. Laertius]
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4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic
8943
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Three-valued logic says excluded middle and non-contradition are not tautologies [Fisher]
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4. Formal Logic / E. Nonclassical Logics / 4. Fuzzy Logic
8945
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Fuzzy logic has many truth values, ranging in fractions from 0 to 1 [Fisher]
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