P = intersectionLattice(L, R)
The intersection lattice of a hyperplane arrangement is the lattice of intersections in the arrangement partially ordered by containment.
i1 : R = QQ[x,y,z];
i2 : intersectionLattice({x+y, x+z, y+z}, R) o2 = Relation Matrix: | 1 0 1 0 1 0 1 0 | | 0 1 1 0 0 1 1 0 | | 0 0 1 0 0 0 1 0 | | 0 0 0 1 1 1 1 0 | | 0 0 0 0 1 0 1 0 | | 0 0 0 0 0 1 1 0 | | 0 0 0 0 0 0 1 0 | | 1 1 1 1 1 1 1 1 | o2 : Poset
The object intersectionLattice is a method function.