Combining Philosophers

Ideas for Rescher,N/Oppenheim,P, Mark Colyvan and Robert C. Stalnaker

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2 ideas

4. Formal Logic / E. Nonclassical Logics / 2. Intuitionist Logic

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Rejecting double negation elimination undermines reductio proofs [Colyvan]

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Showing a disproof is impossible is not a proof, so don't eliminate double negation [Colyvan]