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: T(z) -> R(z). forall z: R(z) <-> T(z).
forall z: R(z) -> T(z) can be inferred via the universal biconditional elimination rule. forall z: T(z) -> R(z) can be inferred via the universal biconditional elimination rule.