Description
vertexEdgeMatrix computes the matrix
M where the columns are indexed by the edges and the rows are indexed by the vertices of
P and has 1 as an entry if the corresponding edge contains this vertex and 0 otherwise.
i1 : P = cyclicPolytope(3,5)
o1 = P
o1 : Polyhedron
|
i2 : vertexEdgeMatrix P
o2 = | 0 1 2 3 4 5 6 7 8 9 |
| 1 1 0 1 1 0 0 1 0 0 |
| 2 0 1 1 0 0 0 0 0 1 |
| 3 1 1 0 0 1 0 0 1 0 |
| 4 0 0 0 1 1 1 0 0 0 |
| 5 0 0 0 0 0 1 1 1 1 |
6 10
o2 : Matrix ZZ <-- ZZ
|