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_10. p_10 <-> w. w -> r. r -> p_10.
~r can be inferred via the modus tollens rule. w -> p_10 can be inferred via the transitivity rule. p_10 -> w can be inferred via the biconditional elimination rule. w -> p_10 can be inferred via the biconditional elimination rule. ~w can be inferred via the biconditional elimination rule.