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Ideas for
'Metaphysics', 'Platonism and the Spiritual Life' and 'Grundgesetze der Arithmetik 2 (Basic Laws)'
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6 ideas
6. Mathematics / B. Foundations for Mathematics / 5. Definitions of Number / b. Greek arithmetic
17843
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The idea of 'one' is the foundation of number [Aristotle]
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17850
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Each many is just ones, and is measured by the one [Aristotle]
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17851
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Number is plurality measured by unity [Aristotle]
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6. Mathematics / B. Foundations for Mathematics / 5. Definitions of Number / c. Fregean numbers
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A number is a class of classes of the same cardinality [Frege, by Dummett]
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Frege's biggest error is in not accounting for the senses of number terms [Hodes on Frege]
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6. Mathematics / B. Foundations for Mathematics / 7. Mathematical Structuralism / a. Structuralism
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Mathematics studies abstracted relations, commensurability and proportion [Aristotle]
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