-- -*- M2-comint -*- hash: 10501206059908930451

i1 : L1 = grMatchingField(2, 4, {{1,2}, {1,3}, {2,3}, {1,4}, {2,4}, {4,3}})

o1 = Grassmannian Matching Field for Gr(2, 4)

o1 : GrMatchingField

i2 : isCoherent L1

o2 = true

i3 : getWeightMatrix L1

o3 = | 0 0  0  0  |
     | 0 -1 -3 -2 |

              2       4
o3 : Matrix ZZ  <-- ZZ

i4 : L2 = grMatchingField(2, 3, {{1,2}, {2,3}, {3,1}})

o4 = Grassmannian Matching Field for Gr(2, 3)

o4 : GrMatchingField

i5 : isCoherent L2

o5 = false

i6 : 
