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Ideas for 'Frege's Theory of Numbers', 'System of Logic' and 'Upon Nothing: Swansea lecture'

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6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / a. Units

9801	Numbers must be assumed to have identical units, as horses are equalised in 'horse-power' [Mill]

6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / c. Counting procedure

17447

Parsons says counting is tagging as first, second, third..., and converting the last to a cardinal [Parsons,C, by Heck]