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Ideas for 'Scientific Explanation', 'Philosophies of Mathematics' and 'Representative Government'

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18. Thought / D. Concepts / 1. Concepts / a. Nature of concepts

10110	Corresponding to every concept there is a class (some of them sets) [George/Velleman]
	Full Idea: Corresponding to every concept there is a class (some classes will be sets, the others proper classes).
	From: A.George / D.J.Velleman (Philosophies of Mathematics [2002], Ch.4)