On Thu, 10 Dec 2009 14:37:50 -0800 (PST) Simon King <simon.k...@nuigalway.ie> wrote:
> On 10 Dez., 23:15, William Stein <wst...@gmail.com> wrote: > [...] > > __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ f := x < y > > > > > f*(-3) > > > ; > > > > __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ -3 y < -3 x > > > > > f*z; > > > > __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ *(x < y, z) > > > > > f*a; > > > > __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ *(x < y, a) > > What else could it be? Maple's answer seems quite reasonable to me. I opened a ticket for this: http://trac.sagemath.org/sage_trac/ticket/7660 Checking if the argument is a real number and inverting the relation if it's negative, like Maple does, is a good option. I hope it doesn't slow down the arithmetic with symbolic expressions too much tough. Cheers, Burcin -- 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
