proposition: Lemma relabel2_cnv (F: graph2 Lv1 Le1): relabel2 (F°) ≃2 (relabel2 F)°.
proof: Proof. reflexivity. Qed.
imports: HB(structures) Coq(Setoid Morphisms) mathcomp(all_ssreflect) GraphTheory(edone finite_quotient preliminaries bij equiv) GraphTheory(setoid_bigop structures pttdom mgraph ptt)