Ideas of Jeffrey H. Sicha, by Theme
[American, fl. 1968, At Amherst College.]
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6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / d. Natural numbers
17423

The essence of natural numbers must reflect all the functions they perform

6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / c. Counting procedure
17425

To know how many, you need a numerical quantifier, as well as equinumerosity

17424

Counting puts an initial segment of a serial ordering 11 with some other entities
