Combining Texts
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'fragments/reports', 'De modo distinguendi phaenomena' and 'Philosophical Logic'
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7 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 / D. Modal Logic ML / 6. Temporal Logic
15413
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With four tense operators, all complex tenses reduce to fourteen basic cases [Burgess]
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4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula
15415
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The temporal Barcan formulas fix what exists, which seems absurd [Burgess]
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4. Formal Logic / E. Nonclassical Logics / 2. Intuitionist Logic
15430
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Is classical logic a part of intuitionist logic, or vice versa? [Burgess]
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15431
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It is still unsettled whether standard intuitionist logic is complete [Burgess]
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4. Formal Logic / E. Nonclassical Logics / 5. Relevant Logic
15429
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Relevance logic's → is perhaps expressible by 'if A, then B, for that reason' [Burgess]
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