fact: Definition lim_in {U : Type} (T : filteredType U) := fun F : set_system U => get (fun l : T => F --> l).
imports: HB(structures) mathcomp(all_ssreflect all_algebra finmap generic_quotient) mathcomp(boolp classical_sets functions) mathcomp(cardinality mathcomp_extra fsbigop) reals signed