Combining Philosophers

Ideas for Jonathan Kvanvig, Alfred Tarski and Thomas Reid

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2 ideas

5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle

19192

The truth definition proves semantic contradiction and excluded middle laws (not the logic laws) [Tarski]

5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic

18759

Identity is invariant under arbitrary permutations, so it seems to be a logical term [Tarski, by McGee]