Formalization of the Resolution Calculus for First Order Logic
A formalization in Isabelle/HOL of the resolution calculus for first order logic is presented. Its soundness and completeness are formally proven using the substitution lemma, semantic trees, Herbrand's theorem, and the lifting lemma. In contrast to previous formalizations of resolution, it considers first order logic with full first order terms, instead of the propositional case.
ITP