fact: Definition path_ends (g: Gph) (p: path) (n1 n2 : V) : Prop := phead p = n1 /\ pfoot g p = n2.
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