proposition: Lemma Σ_S_bound_rev n f: Σ n (f ∘ S) == Σ (S n) f - f O.
proof: Proof. rewrite Σ_S_bound_front. ring. Qed.
imports: CoRN.stdlib_omissions.List Coq.QArith.QArith Coq.QArith.Qabs CoRN.model.totalorder.QposMinMax CoRN.model.metric2.Qmetric Coq.Program.Program CoRN.stdlib_omissions.N CoRN.stdlib_omissions.Z CoRN.stdlib_omissions.Q