proposition: Lemma F_One_Zero_ge : F_ E0zero <<= F_ 1.
proof: Proof. intro n; destruct n; rewrite F_zero_eqn, LF1; abstract lia. Qed.
imports: hydras(Iterates Simple_LexProd Exp2) hydras(E0 Canon Paths primRec Hprime) Coq(ArithRing Lia) Compat815 Equations(Equations) hydras(primRec)