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 .000494535 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use decompose) .0041871 seconds
idlizer1: .00783984 seconds
idlizer2: .016034 seconds
minpres: .0110483 seconds
time .0541104 sec #fractions 4]
[step 1:
radical (use decompose) .00480606 seconds
idlizer1: .00950999 seconds
idlizer2: .0306458 seconds
minpres: .0177674 seconds
time .0813314 sec #fractions 4]
[step 2:
radical (use decompose) .0044681 seconds
idlizer1: .0135982 seconds
idlizer2: .10134 seconds
minpres: .0137766 seconds
time .151299 sec #fractions 5]
[step 3:
radical (use decompose) .00466568 seconds
idlizer1: .0112209 seconds
idlizer2: .0488924 seconds
minpres: .0399664 seconds
time .133831 sec #fractions 5]
[step 4:
radical (use decompose) .00499204 seconds
idlizer1: .0234835 seconds
idlizer2: .109427 seconds
minpres: .0177186 seconds
time .183846 sec #fractions 5]
[step 5:
radical (use decompose) .00469725 seconds
idlizer1: .0136127 seconds
time .0275771 sec #fractions 5]
-- used 0.636502 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
|