Exercise logic.propositional.consequence

Description
Prove that formula is a logical consequence of a set of formulas

Derivation

Final term is not finished

~p || (q -> r), q => p -> r

⇒ logic.propositional.defimpl, initial=TList [TCon logic1.or [TCon logic1.not [TVar "p"],TCon logic1.implies [TVar "q",TVar "r"]],TVar "q"]

~p || ~q || r, q => p -> r