If you do sage: x^a*x^b-x^c*x^d -x^d*x^c + x^b*x^a sage: _.simplify_full() x^(a + b) - x^(c + d)
it will work, but apparently this simplification is not built into Pynac, probably for good reasons? - kcrisman On Aug 12, 9:47 pm, vasu <tewari.v...@gmail.com> wrote: > Hi > Thanks for the suggestions. But there is one issue which still > rankles. Maybe it's just me, but I would prefer > x^a*x^b-x^c*x^d to turn up as x^(a+b)-x^(c+d) > > Anyway, thanks again for the help > > On Aug 12, 12:40 pm, kcrisman <kcris...@gmail.com> wrote: > > > > > On Aug 12, 3:24 pm, Mani Chandra <mc0...@gmail.com> wrote: > > > > Hi, > > > > In the same context, how can I get the following to work? > > > > A = matrix(SR, [[x, 1], [x**3, 4]]) > > > A.eigenvectors_right() > > > > __main__:1: UserWarning: Using generic algorithm for an inexact ring, > > > which may result in garbage from numerical precision issues. > > > __main__:1: UserWarning: Using generic algorithm for an inexact ring, > > > which will probably give incorrect results due to numerical precision > > > issues. > > > Traceback (click to the left of this block for traceback) > > > ... > > > TypeError: degree() takes exactly one argument (0 given) > > > This got broken over a year ago, and there is a patch which has is > > nearly ready for positive review on it. > > Seehttp://trac.sagemath.org/sage_trac/ticket/6934 > > for the discussion. > > > - kcrisman -- 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
