char(SparseResultant) -- get the characteristic

Synopsis

• Function: char

• Usage:

  char R

• Inputs:
  • R, an instance of the type SparseResultant
• Outputs:
  • an integer, the characteristic of the ring of the polynomial representing R

Description

i1 : R = denseResultant(2,2,1,CoefficientRing=>ZZ/331);

o1 : SparseResultant (sparse mixed resultant associated to {| 0 0 0 1 1 2 |, | 0 0 0 1 1 2 |, | 0 0 1 |} over ZZ/331)
                                                            | 0 1 2 0 1 0 |  | 0 1 2 0 1 0 |  | 0 1 0 |

i2 : char R

o2 = 331

i3 : char denseResultant(2,2,1)

o3 = 0