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The A rs Magna of Ramon Lull
A Network Diagram for the Propositional Calculus
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ABC ABc AbC algebraic Alonzo Church assertion B's T line binary relation Boole Boole's cards chapter Charles Peirce chines circuits class logic compartments compound statements constructed cross mark demonstrator designation number device disjunction electrical logic machine electronic eliminate equations example EXCLUSIVE DISJUNCTION F line formal logic four graph gray Hamilton handling holon iconic identical implication indicate inference involved Jevons Jevons's logical Leibnitz letters logic diagrams logic machine logic problems logical alphabet logicians Lull's method Lullian Marquand mathematics matrix mechanical ment middle term negation negative not-A notation operate paper Peirce philosophy possible combinations predicate premises procedure propositional calculus propositional logic Ramon Lull represent rotating shading shown in Figure simple solving problems square Stanhope structure syllogism Symbolic Logic theorem three-value logic tion topological true or false truth table truth-value lines University Venn circles Venn diagrams Venn's wheels