proposition: Lemma lim_id x : lim (nbhs x) = x.
proof: Proof. by apply/esym/cvg_eq/cvg_ex; exists x. Qed.
imports: HB(structures) mathcomp(all_ssreflect all_algebra finmap generic_quotient) mathcomp(boolp classical_sets functions) mathcomp(cardinality mathcomp_extra fsbigop) reals signed