Hi Burcin,
On Fri, Jun 5, 2009 at 12:39 PM, Burcin Erocal<bur...@erocal.org> wrote:
>> (3) symbolic "diff" now returns a rather incomprehensible output
>> -------
>> f(x) = function('f',x)
>> diff(f(x),x)
>> D[0](f)(x)
>> -------
>> What does that '0' really means? Typeset version also looks similar.
>
> This is also the notation used by Maple, we inherited it from GiNaC.
> Here is some explanation from the Maple manual:
>
> http://www.maplesoft.com/support/help/view.aspx?path=D
>
> Indexes in Sage start from 0, not 1. I think this is the only
> difference between Maple and Sage.
>
>> IMHO, the typeset version of any expression of Sage should look
>> more like those found in text-books, journals.
>
> I agree that we should do better than the current situation. Any help
> would be much appreciated.
>
> I'm sorry your patch at #5711 coincided with the switch to pynac. I
> still didn't get a chance to check how it fits into the new symbolics
> code. I'll also try to do this in the weekend. If you can also comment
> on how much of it is still relevant on the ticket, that would save a
> lot of time.
I have started reading new symbolics code. Let me have some
basic understanding of how it works, then I will be able to make
some definite comments on the patch whether some of the code
can be directly copied or not. I might then try to forward-port
the patch.
Cheers,
Golam
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to sage-devel@googlegroups.com
To unsubscribe from this group, send email to
sage-devel-unsubscr...@googlegroups.com
For more options, visit this group at http://groups.google.com/group/sage-devel
URLs: http://www.sagemath.org
-~----------~----~----~----~------~----~------~--~---
