Syntactic Reduction of Predicate Tableaux to Propositional Tableaux
نویسندگان
چکیده
We reene the semantic process which reduces predicate logic to propositional tautologies. We then devise a tableau based proof system mirroring the semantic process by purely syntactic (i.e. programmable) means. We obtain a beautifully symmetric set of theorems given in the gure 1. As a byproduct of the reenement we have a simple tableau method of deciding quasi-tautologies and a proof system without the eigen-variable condition.
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