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Single Idea 10110

[from 'Philosophies of Mathematics' by A.George / D.J.Velleman, in 18. Thought / D. Concepts / 1. Concepts / a. Nature of concepts ]

Full Idea

Corresponding to every concept there is a class (some classes will be sets, the others proper classes).

Clarification

Sets are more precisely defined than classes

Gist of Idea

Corresponding to every concept there is a class (some of them sets)

Source

A.George / D.J.Velleman (Philosophies of Mathematics [2002], Ch.4)

Book Reference

George,A/Velleman D.J.: 'Philosophies of Mathematics' [Blackwell 2002], p.90