Combining Texts
Ideas for
'Intensional Logic', 'Fact, Fiction and Forecast (4th ed)' and 'A Problem about Substitutional Quantification?'
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4 ideas
5. Theory of Logic / A. Overview of Logic / 8. Logic of Mathematics
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Classical logic is deliberately extensional, in order to model mathematics [Fitting]
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5. Theory of Logic / C. Ontology of Logic / 4. Logic by Convention
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If the result is bad, we change the rule; if we like the rule, we reject the result [Goodman]
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5. Theory of Logic / F. Referring in Logic / 3. Property (λ-) Abstraction
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λ-abstraction disambiguates the scope of modal operators [Fitting]
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5. Theory of Logic / G. Quantification / 4. Substitutional Quantification
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The substitutional quantifier is not in competition with the standard interpretation [Kripke, by Marcus (Barcan)]
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