char(SparseDiscriminant) -- get the characteristic

Synopsis

• Function: char

• Usage:

  char D

• Inputs:
  • D, an instance of the type SparseDiscriminant
• Outputs:
  • an integer, the characteristic of the ring of the polynomial representing D

Description

i1 : D = denseDiscriminant(2,2,CoefficientRing=>ZZ/331);

o1 : SparseDiscriminant (sparse discriminant associated to | 0 0 0 1 1 2 | over ZZ/331)
                                                           | 0 1 2 0 1 0 |

i2 : char D

o2 = 331

i3 : char denseDiscriminant(2,2)

o3 = 0