fact: Definition relabel (G: graph Lv1 Le1): graph Lv2 Le2 := Graph (@endpoint _ _ G) (fv \o (@vlabel _ _ G)) (fe \o (@elabel _ _ G)).
imports: HB(structures) Coq(Setoid Morphisms) mathcomp(all_ssreflect) GraphTheory(edone finite_quotient preliminaries bij equiv) GraphTheory(setoid_bigop structures pttdom mgraph ptt)