grading(PolynomialRing) -- The coker grading of a polynomial ring.

• Function: grading

• Usage:

  grading(R)

• Inputs:
  • R, a polynomial ring,
• Outputs:
  • a matrix,

i1 : R=QQ[x_0..x_4];

i2 : addCokerGrading(R);

              5       4
o2 : Matrix ZZ  <-- ZZ

i3 : grading R

o3 = | -1 -1 -1 -1 |
     | 1  0  0  0  |
     | 0  1  0  0  |
     | 0  0  1  0  |
     | 0  0  0  1  |

              5       4
o3 : Matrix ZZ  <-- ZZ