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: w -> p. p_3 <-> p. p_6 -> w. ~p_3.
p_6 -> p can be inferred via the transitivity rule. p_3 -> p can be inferred via the biconditional elimination rule. p -> p_3 can be inferred via the biconditional elimination rule. ~p can be inferred via the biconditional elimination rule.