Q = P1 * P2
i1 : P1 = convexHull matrix {{1,-1,0,0},{0,0,1,-1}} o1 = P1 o1 : Polyhedron
i2 : P2 = convexHull matrix {{1},{-1}} o2 = P2 o2 : Polyhedron
i3 : P = P1 * P2 o3 = P o3 : Polyhedron
i4 : vertices P o4 = | -1 1 0 0 | | 0 0 -1 1 | | 1 1 1 1 | | -1 -1 -1 -1 | 4 4 o4 : Matrix QQ <-- QQ