Combining Philosophers

Ideas for Correia,F/Schnieder,B, Hermarchus and B Russell/AN Whitehead

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4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL

9542	The best known axiomatization of PL is Whitehead/Russell, with four axioms and two rules [Russell/Whitehead, by Hughes/Cresswell]