Proofgold Proof

pf
Apply unknownprop_15156acfaef83289041d2fede437e15a29e8b8de66c5ea43e1171f433b1a0acd with ordsucc, nat_p, 0 leaving 2 subgoals. The subproof is completed by applying nat_ordsucc. The subproof is completed by applying nat_0. ■