proposition: Lemma limn_einf_lim u : limn_einf u = limn (einfs u).
proof: Proof. rewrite /limn_einf limn_esup_lim esupsN -limeN//. by under eq_fun do rewrite oppeK. by apply: is_cvgeN; exact: is_cvg_einfs. 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