Require Export PA.
Unset Standard Proposition Elimination Names.

(* Specifications: *)
Lemma paZeroOrSucc :
forall t : Term,
SysPrf PA
(orH (equal t Zero)
(existH (newVar (0 :: freeVarTerm LNT t))
(equal t (Succ (var (newVar (0 :: freeVarTerm LNT t))))))).
Lemma paPlusSym : forall a b : Term, SysPrf PA (equal (Plus a b) (Plus b a)).
Lemma NN72PA : SysPrf PA (LNN2LNT_formula NN7).
Lemma NN82PA : SysPrf PA (LNN2LNT_formula NN8).
Lemma NN92PA : SysPrf PA (LNN2LNT_formula NN9).