> Hi Joris,
>
> I must say ain't a programmer, and my `free' time is not much.
> However, I'd like to help you implementing the code for improving the
> diff. forms manipulation.
>
> Feel free of contact me. Regards,
>
> Dox.
>
> On Dec 27, 4:51 am, jvk
Hi Dox,
Both are very high on my list of priorities, but I haven't gotten
round to implementing them. If you give me a month or so, I might get
round to it, or you can try your hand yourself at implementing
this :)
Let me know if I can be of any assistance.
Best wishes,
Joris
On Dec 25, 12:4
On Dec 9, 9:57 pm, Dan Drake wrote:
> *facepalm* That was stupid -- matrix_plot() already accepts numpy arrays
> of shape (x,y,3) and plots them as a color image exactly the way I want.
> No need to mess around with pylab.imshow().
>
> Sorry for the noise.
Actually, your message gave me some g
On 11 nov, 10:34, Jason Grout wrote:
> [1]http://artsci.drake.edu/grout/doku.php/grants#nsf_ccli_phase_2_grant
Hi Jason,
I had a look at your project and noticed the example of visualizing
row reduction for linear algebra students (where Sage prints out at
each step which of the entries change,
Hi John,
One of the problems is that F is a functional rather than an ordinary
function. So the derivatives with respect to u are functional
derivatives, and I dont think diff() can compute these without any
help. Let's focus on one of the terms for instance: put f = u_x and
consider
=
ting the result (the differential d f), the various partial
derivatives are computed and put together in the right order.
All the best,
Joris.
On 9 okt, 19:53, Oscar Lazo wrote:
> On Oct 9, 2:58 pm, jvkersch wrote:
>
>
>
> > Hi Oscar,
>
> > In Sage 4.6 (currently 4.
Hi Oscar,
In Sage 4.6 (currently 4.6alpha2) you will be able to do this using
differential forms:
sage: x, y, z = var('x, y, z')
sage: U = CoordinatePatch((x, y, z))
sage: F = DifferentialForms(U)
sage: f = F(x^2 + y + sin(z)); f
(x^2 + y + sin(z))
sage: g = f.diff(); g
cos(z)*dz + 2*x*dx + dy
Hi all,
at this stage I would also like to advertise trac 9650, which if it
passes review would add support to Sage for differential form
calculations. It's only a "small" step to algebraic topology from
there.
All the best
Joris
On 7 aug, 01:21, Mitesh Patel wrote:
> On Thu, Jul 29, 2010 at 8:
Hi all,
Is there a way to do extended complex arithmetic in Sage? I mean,
adding a constant infinity such that oo + a = oo, a*oo = oo for a !=
0, etc. For now, I just made a small class wrapping a standard
complex number, but I wouldn't be surprised if this was already in
Sage, and done in a mu
ot!
Joris
On 20 apr, 15:20, "ma...@mendelu.cz" wrote:
> On 20 dub, 09:39, jvkersch wrote:
>
> > Thanks Robert, this seems to be the problem. I wish I were a lisp
> > programmer so that I could dive into Maxima and put in a call to
> > coerce-float-fun myself, but whi
which
> evaluate expressions to numbers (e.g. plotting, quadpack).
>
> Follow-ups to the Maxima mailing list. I've appended
> the original message below.
>
> best
>
> Robert Dodier
>
> PS.
>
> On Apr 19, 8:38 am, jvkersch wrote:
>
>
>
> > Tech
Hi all,
Technically, this is not a Sage problem, but I figured I would post it
here anyway since others might have run into the same problem, and I'm
also trying to solve the problem using some Sage/python trickery.
The problem concerns the use of symbolic constants such as pi in
numerical integr
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