Hasse diagram (original) (raw)

]> Hasse diagram xyz {x,y,z} yz {y,z} xyz->yz xz {x,z} xyz->xz xy {x,y} xyz->xy y {y} yz->y z {z} yz->z x {x} xz->x xz->z xy->x xy->y phi Ø x->phi y->phi z->phi