isStable -- determines whether the mth Hilbert point of I is GIT stable

Synopsis

• Usage:

  isStable(3,I)

• Inputs:
  • an integer, specifies which Hilbert point to test
  • an ideal, the ideal

Description

i1 : R = QQ[a..d];

i2 : I = ideal(a*c-b^2,a*d-b*c,b*d-c^2);

o2 : Ideal of R

i3 : isStable(3,I)

o3 = true

i4 : I = ideal(a^2,b^2,b*c);

o4 : Ideal of R

i5 : isStable(3,I) 

o5 = false