fact: Definition cf_qzt_size1 cf := let nperm := if cf_main_arity cf <= 8 then 3 else 1 in if cfsym cf then nperm else double nperm.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype path fingraph) fourcolor(hypermap geometry color coloring quiz cfmap) fourcolor(cfquiz cfreducible)