1968 | Counting and the Natural Numbers |
2 | p.407 | 17424 | Counting puts an initial segment of a serial ordering 1-1 with some other entities |
2 | p.407 | 17423 | The essence of natural numbers must reflect all the functions they perform |
3 | p.410 | 17425 | To know how many, you need a numerical quantifier, as well as equinumerosity |