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 .001 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use decompose) .005999 seconds
idlizer1: .011998 seconds
idlizer2: .022996 seconds
minpres: .054992 seconds
time .113982 sec #fractions 4]
[step 1:
radical (use decompose) .005999 seconds
idlizer1: .012998 seconds
idlizer2: .038994 seconds
minpres: .024996 seconds
time .146978 sec #fractions 4]
[step 2:
radical (use decompose) .005999 seconds
idlizer1: .017997 seconds
idlizer2: .045993 seconds
minpres: .019997 seconds
time .112983 sec #fractions 5]
[step 3:
radical (use decompose) .006999 seconds
idlizer1: .014998 seconds
idlizer2: .06899 seconds
minpres: .095986 seconds
time .222966 sec #fractions 5]
[step 4:
radical (use decompose) .005 seconds
idlizer1: .027996 seconds
idlizer2: .184972 seconds
minpres: .023996 seconds
time .278957 sec #fractions 5]
[step 5:
radical (use decompose) .006999 seconds
idlizer1: .017997 seconds
time .035995 sec #fractions 5]
-- used 0.91886 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
|