Combining Texts
Ideas for
'Structures and Structuralism in Phil of Maths', 'Reply to Professor Marcus' and 'Necessity and Non-Existence'
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2 ideas
5. Theory of Logic / G. Quantification / 4. Substitutional Quantification
10801
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Either reference really matters, or we don't need to replace it with substitutions [Quine]
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5. Theory of Logic / G. Quantification / 5. Second-Order Quantification
10175
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Three types of variable in second-order logic, for objects, functions, and predicates/sets [Reck/Price]
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