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Ideas for
'Wisdom', 'Begriffsschrift' and 'Hilbert's Programme'
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5 ideas
5. Theory of Logic / G. Quantification / 1. Quantification
9950
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A quantifier is a second-level predicate (which explains how it contributes to truth-conditions) [Frege, by George/Velleman]
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5. Theory of Logic / G. Quantification / 2. Domain of Quantification
9991
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For Frege the variable ranges over all objects [Frege, by Tait]
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10536
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Frege's domain for variables is all objects, but modern interpretations first fix the domain [Dummett on Frege]
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5. Theory of Logic / G. Quantification / 3. Objectual Quantification
7742
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Frege reduced most quantifiers to 'everything' combined with 'not' [Frege, by McCullogh]
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7730
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Frege introduced quantifiers for generality [Frege, by Weiner]
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