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 .000873575 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use decompose) .00710849 seconds
idlizer1: .0137492 seconds
idlizer2: .0265667 seconds
minpres: .013601 seconds
time .0819034 sec #fractions 4]
[step 1:
radical (use decompose) .00755247 seconds
idlizer1: .0153331 seconds
idlizer2: .0275127 seconds
minpres: .0217524 seconds
time .0915906 sec #fractions 4]
[step 2:
radical (use decompose) .00458892 seconds
idlizer1: .0133289 seconds
idlizer2: .0802481 seconds
minpres: .0135936 seconds
time .129368 sec #fractions 5]
[step 3:
radical (use decompose) .00454381 seconds
idlizer1: .0108967 seconds
idlizer2: .0475472 seconds
minpres: .0366895 seconds
time .12726 sec #fractions 5]
[step 4:
radical (use decompose) .00479883 seconds
idlizer1: .0219206 seconds
idlizer2: .106009 seconds
minpres: .0167719 seconds
time .175583 sec #fractions 5]
[step 5:
radical (use decompose) .00444482 seconds
idlizer1: .0131583 seconds
time .0257944 sec #fractions 5]
-- used 0.638939 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
|