#7730: hessenberg_form hangs (or is *very* slow)
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Reporter: spancratz | Owner: spancratz
Type: defect | Status: new
Priority: minor | Milestone:
Component: algebra | Keywords: matrices, hessenberg form
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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Comment(by was):
> Now the easier expression a*y already causes Sage to hang.
> I can't see an easy reason for why this computation shouldn't
> finish, I guess it's just that *fraction fields* of multivariate
> polynomial rings are very slow in the current implementation.
> In any case, I'll run the code on an idle machine in a few minutes
> and post here again in the next few days.
Unsubstantiated guess: Maybe Singular is taking a GCD, and GCD's in
Singular suck?
We *really* need to write our own polynomial GCD, already...
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7730#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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