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Ideas for 'Leibniz: Guide for the Perplexed', 'Introduction to the Philosophy of Mathematics' and 'Confessions'

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2 ideas

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

17926

Rejecting double negation elimination undermines reductio proofs [Colyvan]

17925

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