fact: Hypotheses (nFx : arity x = nhub) (Ep : size_part p = nhub) (fit_xp : fitp x p).
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype path fingraph) mathcomp(bigop order ssralg ssrnum ssrint) fourcolor(hypermap geometry part)