#5338: Sage 3.2.2: speed regression/infinite loop for "K.<b> = QQ[a]"
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Reporter: mabshoff | Owner: tbd
Type: defect | Status: new
Priority: critical | Milestone: sage-4.0.1
Component: algebra | Keywords:
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Comment(by AlexGhitza):
Replying to [comment:2 robertwb]:
> Hmm, this is insanely slow (i.e. never finishes for me)
>
> {{{
> sage: b = (sqrt(sqrt(2) + 1)/(sqrt(3)) - 1)^(1/3)
> sage: time QQbar(b).minpoly()
> }}}
The problem seems to be here:
{{{
sage: b = (sqrt(sqrt(2) + 1)/(sqrt(3)) - 1)^(1/3)
sage: c = QQbar(b)
sage: od = c._descr
sage: od.exactify() # doesn't seem to finish
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5338#comment:5>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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