i1 : R = QQ[x,y,z]/ideal(x^8-z^6-y^2*z^4-z^3); |
i2 : time R' = integralClosure(R, Verbosity => 2)
[jacobian time .00090098 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use decompose) .00738446 seconds
idlizer1: .0137176 seconds
idlizer2: .0275315 seconds
minpres: .019304 seconds
time .0934402 sec #fractions 4]
[step 1:
radical (use decompose) .0078709 seconds
idlizer1: .0162342 seconds
idlizer2: .0478189 seconds
minpres: .0294707 seconds
time .176126 sec #fractions 4]
[step 2:
radical (use decompose) .00796868 seconds
idlizer1: .0225982 seconds
idlizer2: .0570947 seconds
minpres: .0249515 seconds
time .143758 sec #fractions 5]
[step 3:
radical (use decompose) .00859816 seconds
idlizer1: .0196851 seconds
idlizer2: .0865994 seconds
minpres: .0630881 seconds
time .224794 sec #fractions 5]
[step 4:
radical (use decompose) .00853394 seconds
idlizer1: .0363518 seconds
idlizer2: .176022 seconds
minpres: .0308848 seconds
time .345372 sec #fractions 5]
[step 5:
radical (use decompose) .00809978 seconds
idlizer1: .0226891 seconds
time .0450078 sec #fractions 5]
-- used 1.03575 seconds
o2 = R'
o2 : QuotientRing
|
i3 : trim ideal R'
3 2 2 2 4 4
o3 = ideal (w z - x , w x - w , w x - y z - z - z, w x - w z,
4,0 4,0 1,1 1,1 4,0 1,1
------------------------------------------------------------------------
2 2 2 3 2 3 2 3 2 4 2 2 4 2
w w - x y z - x z - x , w + w x y - x*y z - x*y z - 2x*y z
4,0 1,1 4,0 4,0
------------------------------------------------------------------------
3 3 2 6 2 6 2
- x*z - x, w x - w + x y + x z )
4,0 1,1
o3 : Ideal of QQ[w , w , x, y, z]
4,0 1,1
|
i4 : icFractions R
3 2 2 4
x y z + z + z
o4 = {--, -------------, x, y, z}
z x
o4 : List
|