Combining Texts
Ideas for
'Natural Kinds', 'Penguin Dictionary of Philosophy' and 'Philosophy of Logic'
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5 ideas
5. Theory of Logic / G. Quantification / 1. Quantification
9015
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Universal quantification is widespread, but it is definable in terms of existential quantification [Quine]
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6890
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Quantifiers turn an open sentence into one to which a truth-value can be assigned [Mautner]
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5. Theory of Logic / G. Quantification / 4. Substitutional Quantification
9025
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You can't base quantification on substituting names for variables, if the irrationals cannot all be named [Quine]
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9026
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Some quantifications could be false substitutionally and true objectually, because of nameless objects [Quine]
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5. Theory of Logic / G. Quantification / 5. Second-Order Quantification
10705
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Putting a predicate letter in a quantifier is to make it the name of an entity [Quine]
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