Combining Philosophers

All the ideas for Saunders MacLane, Roy Bhaskar and R Cook / P Ebert

expand these ideas     |    start again     |     specify just one area for these philosophers

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3 ideas

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets

18189

ZFC could contain a contradiction, and it can never prove its own consistency [MacLane]

9. Objects / D. Essence of Objects / 5. Essence as Kind

15143

Kind essences are the categorical bases of a thing's causal powers [Bhaskar, by Chakravartty]

18. Thought / E. Abstraction / 7. Abstracta by Equivalence

9141	Abstraction theories build mathematics out of second-order equivalence principles [Cook/Ebert]