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_1: T(z_1) <-> W_4(z_1). W_4(g) or ~T(g).
T(g) -> W_4(g) can be inferred via the rewriting rule. forall z_1: T(z_1) -> W_4(z_1) can be inferred via the universal biconditional elimination rule. forall z_1: W_4(z_1) -> T(z_1) can be inferred via the universal biconditional elimination rule.