nat.plus_O_n
∀ n, n = (O + n)
Theorem plus_O_n : forall (n:nat), logic.eq (nat) n (plus O n).
theorem plus_O_n : \forall (n:nat). (eq) (nat) n ((plus) (O) n).
theorem plus_O_n : forall (n:nat.nat) , (((logic.eq_) (nat.nat)) (n)) ((((nat.plus) ) ((nat.O) )) (n)).
plus_O_n : LEMMA (FORALL(n:nat_sttfa.sttfa_nat):logic_sttfa_th.eq[nat_sttfa.sttfa_nat](n)(nat_sttfa.plus(nat_sttfa.sttfa_O)(n)))
Printing for OpenTheory is not working at the moment.