proposition: Lemma c2ww: forall x, ZEll.nmul (vN exx) 2 x = ZEll.nmul (vN exx) (z2Z c2) x.
proof: Proof. intros x; unfold ZEll.nmul. unfold c2; rewrite z2Zx; rewrite Zmodml; auto. Qed.
imports: ZArith Znumtheory Zpow_facts CyclicAxioms Cyclic63 Int63Compat Bignums(DoubleCyclic BigN) W Mod_op ZEll Bits Zmod