When the computation takes a considerable time, this function can be used to decide if it will ever finish, or to get a feel for what is happening during the computation.
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 .000606057 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use minprimes) .0560377 seconds
idlizer1: .00920049 seconds
idlizer2: .0172122 seconds
minpres: .0117357 seconds
time .112427 sec #fractions 4]
[step 1:
radical (use minprimes) .00302538 seconds
idlizer1: .0146819 seconds
idlizer2: .029856 seconds
minpres: .017956 seconds
time .0845186 sec #fractions 4]
[step 2:
radical (use minprimes) .00284699 seconds
idlizer1: .0149222 seconds
idlizer2: .0315637 seconds
minpres: .0140225 seconds
time .106567 sec #fractions 5]
[step 3:
radical (use minprimes) .00280971 seconds
idlizer1: .0151859 seconds
idlizer2: .0464662 seconds
minpres: .0360944 seconds
time .126654 sec #fractions 5]
[step 4:
radical (use minprimes) .00286785 seconds
idlizer1: .0458744 seconds
idlizer2: .104363 seconds
minpres: .0201312 seconds
time .200934 sec #fractions 5]
[step 5:
radical (use minprimes) .00331829 seconds
idlizer1: .0124338 seconds
time .0271454 sec #fractions 5]
-- used 0.663326 seconds
o2 = R'
o2 : QuotientRing
|
i3 : trim ideal R'
3 2 2 2 4 4 2 2 2 3 2 3 2 3 2
o3 = ideal (w z - x , w x - w , w x - y z - z - z, w x - w z, w w - x y z - x z - x , w + w x y -
4,0 4,0 1,1 1,1 4,0 1,1 4,0 1,1 4,0 4,0
----------------------------------------------------------------------------------------------------------------------------
4 2 2 4 2 3 3 2 6 2 6 2
x*y z - x*y z - 2x*y z - x*z - x, w x - w + x y + x z )
4,0 1,1
o3 : Ideal of QQ[w , w , x..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
|
The exact information displayed may change.