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_1 or p. t_3 or ~p. t_3 <-> p_1.
p -> t_3 can be inferred via the rewriting rule. t_3 -> p_1 can be inferred via the biconditional elimination rule. p_1 -> t_3 can be inferred via the biconditional elimination rule.