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8. Modes of Existence / A. Relations / 4. Formal Relations / a. Types of relation

13043	A relation is a set consisting entirely of ordered pairs [Potter]
	Full Idea: A set is called a 'relation' if every element of it is an ordered pair.
	From: Michael Potter (Set Theory and Its Philosophy [2004], 04.7)
	A reaction: This is the modern extensional view of relations. For 'to the left of', you just list all the things that are to the left, with the things they are to the left of. But just listing the ordered pairs won't necessarily reveal how they are related.