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: u_3 or q. R_10(a_10) <-> u_3. forall x_10: ~R_10(x_10).
R_10(a_10) -> u_3 can be inferred via the biconditional elimination rule. u_3 -> R_10(a_10) can be inferred via the biconditional elimination rule.