Exercise logic.propositional.consequence
Description
Prove that formula is a logical consequence of a set of formulas
Firsts
Rule logic.propositional.defimpl Location [0,0,1] Term "Just (TList [TList [TCon logic1.or [TCon logic1.not [TVar \"p\"],TCon logic1.or [TCon logic1.not [TVar \"q\"],TVar \"r\"]],TVar \"q\"],TCon logic1.implies [TVar \"p\",TVar \"r\"]])" Focus "Just (TCon logic1.or [TCon logic1.not [TVar \"q\"],TVar \"r\"])" Environment