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 .00089522 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use decompose) .00727942 seconds
idlizer1: .0136477 seconds
idlizer2: .0272833 seconds
minpres: .0190377 seconds
time .0925924 sec #fractions 4]
[step 1:
radical (use decompose) .00777748 seconds
idlizer1: .0159556 seconds
idlizer2: .0470819 seconds
minpres: .0290797 seconds
time .175169 sec #fractions 4]
[step 2:
radical (use decompose) .00788954 seconds
idlizer1: .0223539 seconds
idlizer2: .0562836 seconds
minpres: .0246314 seconds
time .141856 sec #fractions 5]
[step 3:
radical (use decompose) .008404 seconds
idlizer1: .019456 seconds
idlizer2: .0847521 seconds
minpres: .0617075 seconds
time .220179 sec #fractions 5]
[step 4:
radical (use decompose) .0083318 seconds
idlizer1: .0358156 seconds
idlizer2: .171138 seconds
minpres: .0302289 seconds
time .338847 sec #fractions 5]
[step 5:
radical (use decompose) .0079767 seconds
idlizer1: .0225081 seconds
time .0445912 sec #fractions 5]
-- used 1.02046 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
|