Combining Texts
Ideas for
'No Understanding without Explanation', 'Some Puzzles of Ground' and 'Introducing the Philosophy of Mathematics'
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3 ideas
4. Formal Logic / E. Nonclassical Logics / 2. Intuitionist Logic
8708
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Double negation elimination is not valid in intuitionist logic [Friend]
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4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic
14263
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Strong Kleene disjunction just needs one true disjunct; Weak needs the other to have some value [Fine,K]
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4. Formal Logic / E. Nonclassical Logics / 6. Free Logic
8694
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Free logic was developed for fictional or non-existent objects [Friend]
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