proposition: Lemma eq_eseriesr (R : numFieldType) (f g : (\bar R)^nat) (P : pred nat) {N} : (forall i, P i -> f i = g i) -> \sum_(N <= i <oo | P i) f i = \sum_(N <= i <oo | P i) g i.
proof: Proof. by move=> efg; apply/congr_lim/funext => n; exact: eq_bigr. 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