Show that resolution is commutative and associative. Specifically, if A, B, and C are Horn clauses, show
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Show that resolution is commutative and associative. Specifically, if A, B, and C are Horn clauses, show that (A ⊕B) = (B ⊕ A) and that ((A ⊕ B) ⊕ C) = (A ⊕ (B ⊕ C)), where ⊕ indicates resolution. Be sure to think about what happens to variables that are instantiated as a result of unification.
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