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 .000360426 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use decompose) .00291615 seconds
idlizer1: .00521456 seconds
idlizer2: .0316925 seconds
minpres: .00697491 seconds
time .0577743 sec #fractions 4]
[step 1:
radical (use decompose) .00293584 seconds
idlizer1: .00661362 seconds
idlizer2: .0518418 seconds
minpres: .011576 seconds
time .0847881 sec #fractions 4]
[step 2:
radical (use decompose) .00303721 seconds
idlizer1: .00890133 seconds
idlizer2: .0534357 seconds
minpres: .0116973 seconds
time .0917847 sec #fractions 5]
[step 3:
radical (use decompose) .00406229 seconds
idlizer1: .0384755 seconds
idlizer2: .0398197 seconds
minpres: .032276 seconds
time .138879 sec #fractions 5]
[step 4:
radical (use decompose) .00299389 seconds
idlizer1: .0143646 seconds
idlizer2: .090764 seconds
minpres: .0115097 seconds
time .164226 sec #fractions 5]
[step 5:
radical (use decompose) .00354622 seconds
idlizer1: .0103227 seconds
time .0200304 sec #fractions 5]
-- used 0.56067 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
|