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 x_1: U_3(x_1) -> Q_1(x_1). w <-> Q_1(a_10).
w -> Q_1(a_10) can be inferred via the biconditional elimination rule. Q_1(a_10) -> w can be inferred via the biconditional elimination rule.