fact: Definition remove_edge (g1: PreGraph Vertex Edge) (e0: Edge) (g2: PreGraph Vertex Edge) := (forall v : Vertex, (vvalid g1 v <-> vvalid g2 v)) /\ (forall e : Edge, e <> e0 -> (evalid g1 e <-> evalid g2 e)) /\ (forall e : Edge, e <> e0 -> src g1 e = src g2 e) /\ (forall e : Edge, e <> e0 -> dst g1 e = dst g2 e) /\ ~ evalid g2 e0.
imports: Coq.Logic.ProofIrrelevance CertiGraph.lib.Ensembles_ext CertiGraph.lib.EquivDec_ext CertiGraph.lib.List_ext CertiGraph.lib.relation_list CertiGraph.lib.Equivalence_ext