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: q_15 <-> w_3. w_3 or q. w_3 <-> q_15. ~q_15.
q_15 -> w_3 can be inferred via the biconditional elimination rule. w_3 -> q_15 can be inferred via the biconditional elimination rule. w_3 -> q_15 can be inferred via the biconditional elimination rule. q_15 -> w_3 can be inferred via the biconditional elimination rule. ~w_3 can be inferred via the biconditional elimination rule. ~w_3 can be inferred via the biconditional elimination rule.