Consider the following premises. forall x_17: S_1(x_17) -> S_17(x_17). t_4 <-> S_1(a_17). S_17(a_17) -> t_4. ~S_1(a_17). Can we infer t_4 <-> S_1(a_17) from them? If possible, name the inference rules being used at each step.
That is one of the premises. Therefore, the answer is yes.