Combining Texts
Ideas for
'Intensional Logic', 'Possible Worlds' and 'W.V. Quine'
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9 ideas
4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic
8472
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Sentential logic is consistent (no contradictions) and complete (entirely provable) [Orenstein]
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4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL
8476
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Axiomatization simply picks from among the true sentences a few to play a special role [Orenstein]
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4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic
8480
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S4: 'poss that poss that p' implies 'poss that p'; S5: 'poss that nec that p' implies 'nec that p' [Orenstein]
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4. Formal Logic / E. Nonclassical Logics / 8. Intensional Logic
15375
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If terms change their designations in different states, they are functions from states to objects [Fitting]
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15376
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Intensional logic adds a second type of quantification, over intensional objects, or individual concepts [Fitting]
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4. Formal Logic / E. Nonclassical Logics / 9. Awareness Logic
15378
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Awareness logic adds the restriction of an awareness function to epistemic logic [Fitting]
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4. Formal Logic / E. Nonclassical Logics / 10. Justification Logics
15379
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Justication logics make explicit the reasons for mathematical truth in proofs [Fitting]
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4. Formal Logic / F. Set Theory ST / 1. Set Theory
8474
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Unlike elementary logic, set theory is not complete [Orenstein]
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4. Formal Logic / G. Formal Mereology / 1. Mereology
8465
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Mereology has been exploited by some nominalists to achieve the effects of set theory [Orenstein]
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