I guess it would be Singular, not Pari. On Fri, 28 Aug 2020, 22:11 Emmanuel Charpentier, < emanuel.charpent...@gmail.com> wrote:
> Inspiration is this ask.sagemath question > <https://ask.sagemath.org/question/53185/solve-a-system-of-polynomial-equations-getting-different-results-using-symbolic-math-toolbox-of-matlab-and-sage/>. > Roughly, the original question was a discrepancy between the *numerical* > results obtained by Sage and by Matlab when solving a set of three > equations with three unknowns. > > I wanted to compare the numerical results with those obtained by > rearranging the original equations into rational fractions and solving > their numerators (while watching out for null denominators). My code so far > is in the attached SolutionExacte.sage. > > What succeeds : > > - Rearranging the equations in rational fractions > - creating the relevant polynomial ring > - creating the ideal J representing the set of solutions > - checking that its dimension is 0 > > What fails is enumerating the solutions : S=J.variety(QQbar) hasn’t > returned for more than eight hours (!). When throwing the towel (*i. e. > interrupting), I got the following message in a message box of the Jupyter > notebook : > > /usr/local/sage-9/local/lib/python3.7/site-packages/sage/rings/qqbar.py:2078: > RuntimeWarning: cypari2 leaked 2081168 bytes on the PARI stack df = factor(d) > > Questions : > > 1. Is that a known bug ? > 2. Is that possibly a *new* bug ? > 3. If so, how to file the most informative ticket ? > 4. Are you aware of possible workarounds ? > > HTH, > > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-support/ab9e3015-f0cf-43a8-84b3-5c9c7c12d1bao%40googlegroups.com > <https://groups.google.com/d/msgid/sage-support/ab9e3015-f0cf-43a8-84b3-5c9c7c12d1bao%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/CAAWYfq0s_Zxoc2Pib6TRSqrtTHR0RJFRiTFfsyYd9r4yXnm2%3Dg%40mail.gmail.com.
