Single Idea 17458

[catalogued under 6. Mathematics / C. Sources of Mathematics / 6. Logicism / d. Logicism critique]

Full Idea

Equinumerosity is not the same concept as being in one-one correspondence with.

Gist of Idea

Equinumerosity is not the same concept as one-one correspondence

Source

Richard G. Heck (Cardinality, Counting and Equinumerosity [2000], 6)

Book Reference

-: 'Notre Dame Journal of Formal Logic' [-], p.203


A Reaction

He says this is the case, even if they are coextensive, like renate and cordate. You can see that five loaves are equinumerous with five fishes, without doing a one-one matchup.