Combining Philosophers

Ideas for Anaxarchus, Bernard Linsky and Hartry Field

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2 ideas

5. Theory of Logic / I. Semantics of Logic / 2. Formal Truth

10819	Tarski gives us the account of truth needed to build a group of true sentences in a model [Field,H]
	Full Idea: Model theory must choose the denotations of the primitives so that all of a group of sentences come out true, so we need a theory of how the truth value of a sentence depends on the denotation of its primitive nonlogical parts, which Tarski gives us.
	From: Hartry Field (Tarski's Theory of Truth [1972], §1)

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)