proposition: Lemma pmap_eqdep_split A (G G' : pointed_map) h (h' : _ -> G') : @pmap_eqdep A G h (PointedMap G' G') h' -> pmap_eqdep h h'.
proof: Proof. by case: G' h'. Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype path fingraph) fourcolor(hypermap geometry color coloring cfmap ctree)