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: S_12(e) or ~Q(e). forall x_12: Q(x_12) <-> S_12(x_12).
Q(e) -> S_12(e) can be inferred via the rewriting rule. forall x_12: Q(x_12) -> S_12(x_12) can be inferred via the universal biconditional elimination rule. forall x_12: S_12(x_12) -> Q(x_12) can be inferred via the universal biconditional elimination rule.