On Thu, May 22, 2008 at 2:33 PM, Gary Furnish <[EMAIL PROTECTED]> wrote:
>
> Support for substitution of vectors/matrixes
> Support for noncommutative multiplication (with simplification in some
> cases).
I'm excited about the possibility of these two. One of the things I
need to do for finite el
Hi Gary,
On Fri, May 23, 2008 at 4:33 AM, Gary Furnish <[EMAIL PROTECTED]> wrote:
>
> Better support for Multivariable calculus and differential geometry.
Not sure what's been done for these two but I thought I would point
you at this material, it would be great if one could build a similar
(th
On 22-May-08, at 11:33 AM, Gary Furnish wrote:
>
> So after a discussion on irc about how log2(8) should evaluate to 3 by
> default, I thought I'd start taking feature requests for the symbolics
> rewrite I'm currently working on.
I would like to be able to set how some things print a little
e
It is possible to create a polynomial over the symbolic ring, i.e. SR
['x,y']. I don't know if this'd be faster though.
On May 22, 2008, at 1:08 PM, Andrey Novoseltsev wrote:
>
> Maybe, but the coefficients are symbolic non-polynomial (and non-
> rational) expressions. Can it be done anyway? I
Maybe, but the coefficients are symbolic non-polynomial (and non-
rational) expressions. Can it be done anyway? I also had problems with
subtracting 1 from an expression, which I got by substituting rational
functions into a polynomial, so I switched to symbolic representation.
On May 22, 12:54 p
There is definitely going to be some form of pattern matching, as it
is pretty much required by simplification. The exact syntax isn't
decided yet.
1) Everything has been converted to Cython and all of the internals
are pure Cython with no or very few python function calls. The code
is essential
It almost sounds to me like you'd rather be working in a multivariate
polynomial ring (which will be much, much faster).
- Robert
On May 22, 2008, at 12:48 PM, Andrey Novoseltsev wrote:
> Actually, yesterday was the first time I really tried to use Sage for
> symbolic computations and it was
Actually, yesterday was the first time I really tried to use Sage for
symbolic computations and it was quite frustrating for me.
1) It would be really nice if it was faster.
2) It seems to me that
((x+y)*y).coeff(y^2)
and
((x+y)*y).expand().coeff(y^2)
should return the same coefficient 1 (while
On May 22, 8:33 pm, Gary Furnish <[EMAIL PROTECTED]> wrote:
> I thought I'd start taking feature requests ...
wow, pretty impressive list!!
There is actually one thing that could be interesting: rule based
manipulations and substitutions. I don't know if this is in the scope
of your work, but bei
