hermiteNormalForm -- Compute the Hermite normal form of a fractional ideal in a number field

• Usage:

  hermiteNormalForm a

  hermiteNormalForm {a, a', ...}

• Inputs:
  • a, an element of a number field, or a list of them
• Outputs:
  • a matrix, representing the Hermite normal form of the fractional ideal generated by a

i1 : F = toField(QQ[q]/(q^2+3));

i2 : hermiteNormalForm 1_F

o2 = | 1 0 |
     | 0 1 |

              2       2
o2 : Matrix QQ  <-- QQ

i3 : hermiteNormalForm(q/3)

o3 = | 1 1/3 |
     | 0 1/3 |

              2       2
o3 : Matrix QQ  <-- QQ