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 .00086762 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use decompose) .00721692 seconds
idlizer1: .0135675 seconds
idlizer2: .0271959 seconds
minpres: .0189962 seconds
time .0920994 sec #fractions 4]
[step 1:
radical (use decompose) .0077349 seconds
idlizer1: .0158991 seconds
idlizer2: .0469521 seconds
minpres: .0289472 seconds
time .173577 sec #fractions 4]
[step 2:
radical (use decompose) .0078927 seconds
idlizer1: .0224484 seconds
idlizer2: .055959 seconds
minpres: .0245472 seconds
time .141591 sec #fractions 5]
[step 3:
radical (use decompose) .00848458 seconds
idlizer1: .0194403 seconds
idlizer2: .0849064 seconds
minpres: .061444 seconds
time .220201 sec #fractions 5]
[step 4:
radical (use decompose) .00837974 seconds
idlizer1: .0359492 seconds
idlizer2: .172099 seconds
minpres: .0302509 seconds
time .339475 sec #fractions 5]
[step 5:
radical (use decompose) .00799752 seconds
idlizer1: .0225752 seconds
time .0446422 sec #fractions 5]
-- used 1.01873 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
|