display all the ideas for this combination of texts
1 idea
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) |