#projectivity group/homography group
ps := ProjectiveSpace(3,16);
ProjectivityGroup(ps);
HomographyGroup(ps);
ps := ProjectiveSpace(4,81);
ProjectivityGroup(ps);
HomographyGroup(ps);
ps := ProjectiveSpace(5,3);
ProjectivityGroup(ps);
HomographyGroup(ps);
ps := ProjectiveSpace(2,2);
ProjectivityGroup(ps);
HomographyGroup(ps);
quit;

