proposition: Lemma __deprecated__ereal_cvgB (R : realFieldType) (f g : (\bar R)^nat) a b : a +? - b -> f @ \oo --> a -> g @ \oo --> b -> f \- g @ \oo --> a - b.
proof: Proof. exact: cvgeB. Qed.
imports: mathcomp(all_ssreflect ssralg ssrint ssrnum matrix) mathcomp(interval rat) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(set_interval) reals ereal signed topology normedtype landau