fact: Definition dir_iso3 := [set p | [|| id3 == p, s05 == p, s14 == p, s23 == p, r05 == p, r14 == p, r23 == p, r50 == p, r41 == p, r32 == p, r024 == p, r042 == p, r012 == p, r021 == p, r031 == p, r013 == p, r043 == p, r034 == p, s1 == p, s2 == p, s3 == p, s4 == p, s5 == p | s6 == p]].
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq div) mathcomp(choice fintype tuple finfun bigop finset fingroup) mathcomp(action perm primitive_action)