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