proposition: Lemma cvg_eq x y : x --> y -> x = y.
proof: Proof. by rewrite -closeE //; apply: cvg_close. Qed.
imports: HB(structures) mathcomp(all_ssreflect all_algebra finmap generic_quotient) mathcomp(boolp classical_sets functions) mathcomp(cardinality mathcomp_extra fsbigop) reals signed