proposition: Theorem rZCompInv : forall m : rZ, rZComp (rZComp m) = m.
proof: Proof. intros m; case m; simpl in |- *; auto with stalmarck. Qed.
imports: Stalmarck(sTactic) Coq(Relation_Definitions) Coq(ZArith) Coq(Inverse_Image) Coq(Inclusion) Coq(Wf_nat) Coq(List)