On Thu, Dec 17, 2009 at 5:58 PM, Christian Szegedy <christian.szeg...@gmail.com> wrote: > It is impossible to come up with any reasonable explanation for this > kind of slowdown. Even if you do extremely stupid things like > summing all permutations and simplifying the expression at the end, you > can't get that slow. > > Additionally, you cansee that the inverse is computed readily. If you > look at the > entries of the inverse, you can see the determinant in almost every > nonzero entry as denominator (naturally...) It is completely implausible > that the inverse() function which essentially computes the determinant > (and a lot more) is magnitudes faster than computing the determinant > alone. > > I have not seen a ticket opened for this issue, but I would strongly suggest > to open one (I don't have any account for the Trac, but would be happy to > get one.)
Wonderful. Please read http://wiki.sagemath.org/TracGuidelines and email me offlist for your account. Thanks again for improving the quality of Sage through your very valuable bug reports. William -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
