fact: Record oiso2 (G H : pre_graph) := OIso2 { oiso2_graphL : is_graph G; oiso2_graphR : is_graph H; oiso2_iso : pack G ≃2 pack H}.
imports: Coq(Relation_Definitions Morphisms RelationClasses) mathcomp(all_ssreflect) GraphTheory(edone finite_quotient preliminaries bij equiv) GraphTheory(setoid_bigop structures pttdom mgraph mgraph2) GraphTheory(rewriting open_confluence finmap_plus)