Combining Texts

Ideas for 'Identity and Spatio-Temporal Continuity', 'The Metaphysics of Modality' and 'Set Theory and Its Philosophy'

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3 ideas

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

10704

We can formalize second-order formation rules, but not inference rules [Potter]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / d. and

12010

Is the meaning of 'and' given by its truth table, or by its introduction and elimination rules? [Forbes,G]

5. Theory of Logic / H. Proof Systems / 3. Proof from Assumptions

10703

Supposing axioms (rather than accepting them) give truths, but they are conditional [Potter]