Ideas from 'Reference and Generality (3rd ed)' by Peter Geach [1980], by Theme Structure
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6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / d. Counting via concepts
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Are 'word token' and 'word type' different sorts of countable objects, or two ways of counting? [Perry]
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9. Objects / A. Existence of Objects / 6. Nihilism about Objects
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We should abandon absolute identity, confining it to within some category [Hawthorne]
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9. Objects / F. Identity among Objects / 3. Relative Identity
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Denial of absolute identity has drastic implications for logic, semantics and set theory [Wasserman]
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Identity is relative. One must not say things are 'the same', but 'the same A as'
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9. Objects / F. Identity among Objects / 8. Leibniz's Law
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Leibniz's Law is incomplete, since it includes a non-relativized identity predicate [Wasserman]
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