Combining Texts
Ideas for
'Intensional Logic', 'Truthmakers and Converse Barcan Formula' and 'An American Indian model of the Universe'
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7 ideas
4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / h. System S5
15131
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If metaphysical possibility is not a contingent matter, then S5 seems to suit it best [Williamson]
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4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula
15135
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If the domain of propositional quantification is constant, the Barcan formulas hold [Williamson]
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15139
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Converse Barcan: could something fail to meet a condition, if everything meets that condition? [Williamson]
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4. Formal Logic / E. Nonclassical Logics / 8. Intensional Logic
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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
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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
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Justication logics make explicit the reasons for mathematical truth in proofs [Fitting]
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