Combining Philosophers

Ideas for Melvin Fitting, Tom Clark and Wilfrid Hodges

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3 ideas

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

10282

Logic is the study of sound argument, or of certain artificial languages (or applying the latter to the former) [Hodges,W]

5. Theory of Logic / A. Overview of Logic / 5. First-Order Logic

10478

Since first-order languages are complete, |= and |- have the same meaning [Hodges,W]

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

11026

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