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 .00193658 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use minprimes) .0110227 seconds
idlizer1: .0342843 seconds
idlizer2: .0611676 seconds
minpres: .0419135 seconds
time .20815 sec #fractions 4]
[step 1:
radical (use minprimes) .010916 seconds
idlizer1: .0550787 seconds
idlizer2: .109121 seconds
minpres: .0665065 seconds
time .309287 sec #fractions 4]
[step 2:
radical (use minprimes) .0106344 seconds
idlizer1: .0581758 seconds
idlizer2: .123101 seconds
minpres: .0531088 seconds
time .313506 sec #fractions 5]
[step 3:
radical (use minprimes) .0109517 seconds
idlizer1: .0618285 seconds
idlizer2: .252992 seconds
minpres: .146849 seconds
time .577457 sec #fractions 5]
[step 4:
radical (use minprimes) .0109056 seconds
idlizer1: .068398 seconds
idlizer2: .384867 seconds
minpres: .068637 seconds
time .634981 sec #fractions 5]
[step 5:
radical (use minprimes) .0111805 seconds
idlizer1: .0448725 seconds
time .0898052 sec #fractions 5]
-- used 2.15043 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..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
|
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