i1 : R = QQ[x,y,z];
i2 : projectivizeArrangement({x^2-y, y^2-z}, R) o2 = Relation Matrix: | 1 0 1 0 | | 0 1 1 0 | | 0 0 1 0 | | 1 1 1 1 | o2 : Poset