Combining Philosophers

Ideas for Melvin Fitting, Anon (Par) and C.I. Lewis

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2 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

9358	There are several logics, none of which will ever derive falsehoods from truth [Lewis,CI]

5. Theory of Logic / A. Overview of Logic / 8. Logic of Mathematics

11026

Classical logic is deliberately extensional, in order to model mathematics [Fitting]