Combining Philosophers

Ideas for Melvin Fitting, Robert Hanna and Ruth Barcan Marcus

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4 ideas

5. Theory of Logic / A. Overview of Logic / 4. Pure Logic

11058

Logic is explanatorily and ontologically dependent on rational animals [Hanna]

11072

Logic is personal and variable, but it has a universal core [Hanna]

5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic

10794

The nominalist is tied by standard semantics to first-order, denying higher-order abstracta [Marcus (Barcan)]

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

11026

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