Does anyone know a set of axioms for natural deductions? One which leads to the rest of the tautologies of the propositional calculus (and,or,not,if,iff) as theorems?(adsbygoogle = window.adsbygoogle || []).push({});

I want the number of undefined logical operators to be limited to two, either {not,and} or {not,or}.

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# Natural Deduction

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