fact: Definition reachable_set_list (g: Gph) (S : list V) (l : list V) : Prop := forall x : V, In x l <-> reachable_through_set g S x.
imports: Coq.Logic.ProofIrrelevance Coq.micromega.Lia CertiGraph.lib.Coqlib CertiGraph.lib.EnumEnsembles CertiGraph.lib.List_ext CertiGraph.lib.EquivDec_ext CertiGraph.graph.graph_model Coq.Lists.List Coq.Lists.ListDec