On Thu, Sep 8, 2011 at 9:07 AM, Jason Grout <jason-s...@creativetrax.com> wrote: > On 9/8/11 11:00 AM, William Stein wrote: >> >> On Thu, Sep 8, 2011 at 8:49 AM, Jason Grout<jason-s...@creativetrax.com> >> wrote: >>> >>> On 9/8/11 10:30 AM, Dima Pasechnik wrote: >>>> >>>> we should also add that both A.solve_right and A.solve_left claim to >>>> solve Ax=b... >>> >>> >>> Yep. solve_left should be solve_right, IIRC. See >>> http://trac.sagemath.org/sage_trac/ticket/7852. I think this was an >>> error >>> from when I did the RDF switch to a numpy backend. As you can see, Rob >>> posted a patch to fix it (and enhanced a few other things as well). >>> >>> Note that A2.solve_left(b) gives the same vector as A2.inverse()*b >> >> So you made solve_left use the numpy backend and actually do >> solve_right, and left solve_right to use the generic Gauss elimination >> code, so neither is right. Trac 7852 really needs to get in. >> Release manager, merge that sucker. > > Yes, that's also my conclusion after trying to unify our two answers. > > Jason
Our current release manager (leif) just made this a blocker. William -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
