Combining Philosophers

Ideas for Chrysippus, Tertullian and Bernard Linsky

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5. Theory of Logic / I. Semantics of Logic / 5. Extensionalism

21719	Extensionalism means what is true of a function is true of coextensive functions [Linsky,B]
	Full Idea: With the principle of extensionality anything true of one propositional functions will be true of every coextensive one.
	From: Bernard Linsky (Russell's Metaphysical Logic [1999], 6.3)