proposition: Lemma C_dist_eq : forall a b, a = b -> C_dist a b = 0%R.
proof: Proof. intros ; apply (proj2 (C_dist_refl _ _)) ; assumption. Qed.
imports: Rlimit Cbase Ctacfield Cnorm Cprop_base Rsequence_def Csequence Csequence_facts Cfunctions