Combining Texts

Ideas for 'Unconscious Cerebral Initiative', 'New Foundations for Mathematical Logic' and 'Negation'

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4 ideas

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

18789

Intuitionist logic looks best as natural deduction [Mares]

18790

Intuitionism as natural deduction has no rule for negation [Mares]

4. Formal Logic / E. Nonclassical Logics / 3. Many-Valued Logic

18787

Three-valued logic is useful for a theory of presupposition [Mares]

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

9879	NF has no models, but just blocks the comprehension axiom, to avoid contradictions [Quine, by Dummett]