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 .000965 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use decompose) .007776 seconds
idlizer1: .059772 seconds
idlizer2: .028209 seconds
minpres: .020361 seconds
time .142169 sec #fractions 4]
[step 1:
radical (use decompose) .008707 seconds
idlizer1: .016473 seconds
idlizer2: .104404 seconds
minpres: .032137 seconds
time .191806 sec #fractions 4]
[step 2:
radical (use decompose) .007779 seconds
idlizer1: .023364 seconds
idlizer2: .113372 seconds
minpres: .026261 seconds
time .201903 sec #fractions 5]
[step 3:
radical (use decompose) .008746 seconds
idlizer1: .019454 seconds
idlizer2: .09625 seconds
minpres: .126844 seconds
time .301935 sec #fractions 5]
[step 4:
radical (use decompose) .007787 seconds
idlizer1: .038997 seconds
idlizer2: .252494 seconds
minpres: .033101 seconds
time .383036 sec #fractions 5]
[step 5:
radical (use decompose) .007787 seconds
idlizer1: .024329 seconds
time .047689 sec #fractions 5]
-- used 1.27533 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
|