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 .00064241 sec #minors 3]
integral closure nvars 3 numgens 1 is S2 codim 1 codimJ 2
[step 0:
radical (use minprimes) .00355143 seconds
idlizer1: .0112448 seconds
idlizer2: .0202767 seconds
minpres: .0142514 seconds
time .0706564 sec #fractions 4]
[step 1:
radical (use minprimes) .003486 seconds
idlizer1: .0180612 seconds
idlizer2: .0358908 seconds
minpres: .022612 seconds
time .104537 sec #fractions 4]
[step 2:
radical (use minprimes) .00357388 seconds
idlizer1: .0196738 seconds
idlizer2: .0573727 seconds
minpres: .0178432 seconds
time .12278 sec #fractions 5]
[step 3:
radical (use minprimes) .00370937 seconds
idlizer1: .0200646 seconds
idlizer2: .0624386 seconds
minpres: .0502245 seconds
time .191477 sec #fractions 5]
[step 4:
radical (use minprimes) .00366212 seconds
idlizer1: .022576 seconds
idlizer2: .128084 seconds
minpres: .0237222 seconds
time .229563 sec #fractions 5]
[step 5:
radical (use minprimes) .0036401 seconds
idlizer1: .014109 seconds
time .0309207 sec #fractions 5]
-- used 0.755722 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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