Hi Robin,
Maybe a useful resource for you could be the graph theory work in
sage:
http://www.sagemath.org/doc/reference/graphs.html
and the associated book being written
http://code.google.com/p/graph-theory-algorithms-book/
Also, have you got a nice reference that talks about the Binet-Cauchy
in
Thanks that's great!
The pretty printing didn't seem to do much in my native Python shell.
I should probably be using IPython and then isympy but I think I
prefer to stick to the basics since a Windows-based worksheet is sure
to skew things otherwise!
Good idea about links to further work.
Yes,
Thanks for this. A ref to sage is a good idea.
There is a nice paper by Nicholas Harvey which deals with symbolic
issues around Binet-Cauchy and matroids:
http://people.csail.mit.edu/nickh/Publications/AlgebraicMatching/Algebraic-SIAM.pdf
Maybe closer to your interests, Alan Sokal has done a lot o
(copied from issue 2010)
I have ready in my integration3 branch a prototype risch_integrate() function,
that is a user-level function for the full Risch Algorithm I have been
implementing this summer. Pull from
http://github.com/asmeurer/sympy/tree/integration3
.
This is NOT ready to go in.
I didn't want to open an issue before asking here, because for all I know there
could be a very good reason for this.
In [1]: Poly(-5*x**3, x).div(Poly(3*x, x))
Out[1]: (Poly(0, x, domain='ZZ'), Poly(-5*x**3, x, domain='ZZ'))
In [2]: Poly(-5*x**3, x, field=True).div(Poly(3*x, x, field=True))
Out
By the way, this is what Maple does:
> quo(5*x**3, 3*x, x);
5 2
- x
3
> rem(5*x**3, 3*x, x);
0
Now I realize that things might be different there
Hi,
On Thu, Aug 05, 2010 at 05:09:26PM -0600, Aaron S. Meurer wrote:
> I didn't want to open an issue before asking here, because for all I know
> there could be a very good reason for this.
>
> In [1]: Poly(-5*x**3, x).div(Poly(3*x, x))
> Out[1]: (Poly(0, x, domain='ZZ'), Poly(-5*x**3, x, domai
On Aug 5, 2010, at 5:45 PM, Mateusz Paprocki wrote:
> Hi,
>
> On Thu, Aug 05, 2010 at 05:09:26PM -0600, Aaron S. Meurer wrote:
>> I didn't want to open an issue before asking here, because for all I know
>> there could be a very good reason for this.
>>
>> In [1]: Poly(-5*x**3, x).div(Poly(3*x
Hi,
On Thu, Aug 05, 2010 at 06:04:34PM -0600, Aaron S. Meurer wrote:
>
> On Aug 5, 2010, at 5:45 PM, Mateusz Paprocki wrote:
>
> > Hi,
> >
> > On Thu, Aug 05, 2010 at 05:09:26PM -0600, Aaron S. Meurer wrote:
> >> I didn't want to open an issue before asking here, because for all I know
> >> th
