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: p_2 -> p_6. ~q_6. p_6 -> q_6. w <-> p_2.
~p_6 can be inferred via the modus tollens rule. p_2 -> q_6 can be inferred via the transitivity rule. w -> p_2 can be inferred via the biconditional elimination rule. p_2 -> w can be inferred via the biconditional elimination rule.