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by zozbot234
2042 days ago
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Proving "classical" propositions in an intuitionistic system is trivial. Intuitionistic logic can be viewed as an extension of classical logic with new "constructive OR" and "constructive EXISTS" operators. The classical operators are recovered via negation: NOT (NOT a AND NOT b) is classical OR, whilst NOT FORALL x (NOT p) is a classical existential quantifier. |
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