fact: Definition AdjMatLG := (@LabeledGraph V E _ _ DV DE DG).
imports: Coq.ZArith.BinInt Coq.Classes.EquivDec compcert.lib.Integers CertiGraph.lib.List_ext CertiGraph.graph.graph_model CertiGraph.graph.FiniteGraph CertiGraph.graph.path_lemmas