What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: forall z: Q_3(z) or P(z). forall z: Q_3(z) <-> Q_7(z). forall z: P(z) -> Q_7(z).
forall z: Q_3(z) -> Q_7(z) can be inferred via the universal biconditional elimination rule. forall z: Q_7(z) -> Q_3(z) can be inferred via the universal biconditional elimination rule.