fact: Definition base_drules : drules := @seqn part 38 drule1 drule1 drule2 drule2' drule3 drule3' drule4 drule4' drule5 drule6 drule7 drule8 drule9 drule10 drule10' drule11 drule12 drule13 drule14 drule15 drule16 drule17 drule18 drule19 drule20 drule21 drule22 drule23 drule24 drule25 drule26 drule27 drule28 drule29 drule30 drule31 drule31' drule32.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(fintype path fingraph) mathcomp(bigop order ssralg ssrnum ssrint) fourcolor(hypermap geometry part)