support(NCRingElement) -- Returns the variables appearing in the NCRingElement

• Function: support

• Usage:

  sup = support f

• Inputs:
  • f, an instance of the type NCRingElement,
• Outputs:
  • sup, a list,

i1 : A = QQ{x,y,z,w}

o1 = A

o1 : NCPolynomialRing

i2 : f = x^2+y^2+z^3

      3  2  2
o2 = z +y +x

o2 : A

i3 : sup = support f

o3 = {y, x, z}

o3 : List

i4 : first sup

o4 = y

o4 : A