> thanks for working on this topis, it is a nice idea to extract
> variables from ODE automatically. I vote also for splitting into two
> patches and if you have problems with this, I can try it to split them
> by myself. Anyway, the ODE patch depends on the mtype interface and
> this interface sho
> ivars = set(dvar.arguments()).intersection(extract_var_from_diff(de))
I forgot to make intersection in first patch. Changes are in the
second one.
It helps us to solve
sage: x,t=var('x
t')
sage:
f=function('f',x)
sage:
g=function('g',t,x)
sage: de=diff(f,x)+f+diff(g,t,x)
sage: desolve(de,f)
(c
> I suggest that you provide two different patches instead of bundling
> all your changes together. One for the desolve fixes, and another one
> for your mtype interface.
>
> Note that each trac ticket should be on one issue only [1].
>
> [1]http://www.sagemath.org/doc/developer/trac.html#reasons-t
> Did you use hg_sage.add? It is explained
> here:http://www.sagemath.org/doc/developer/producing_patches.html#quick-me...
No I didn't. Thank you for your help. I almost ready with patch.
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On Mar 28, 4:23 pm, "ma...@mendelu.cz" wrote:
> I got some problems after installing the patch, see the comment at
> trac.sagemath.org
I added new file sage/symbolic/mtype.py - which is symbolic module.
(it was marked as ? instead of M in patch log)
I think patch does not create new files. I'll t
> I will add code to trac as soon as possible.
http://trac.sagemath.org/sage_trac/ticket/8616#comment:3
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patch added
http://trac.sagemath.org/sage_trac/ticket/8616#comment:3
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I add changes to the trac. So it will be possible to autodetect
dependent and independent variables in most cases (actually in all
cases sage is able to solve in this moment).
The same can be done with systems I guess and of course with bug
http://trac.sagemath.org/sage_trac/ticket/7401
Anyone wh
I add changes to the trac. So it will be possible to autodetect
dependent and independent variables in most cases (actually in all
cases sage is able to solve in this moment).
The same can be done with systems I guess and of course with bug
http://trac.sagemath.org/sage_trac/ticket/7401
Anyone wh
I add changes to the trac. So it will be possible to autodetect
dependent and independent variables in most cases (actually in all
cases sage is able to solve in this moment).
The same can be done with systems I guess and of course with bug
http://trac.sagemath.org/sage_trac/ticket/7401
Anyone wh
As a maple user I can say that sage is difficult to use if you just
going to do some simple math. The main reason is - I used to deal with
symbolic computation. So what's wrong with symbolic in Sage?
To do some complex symbolic computation I usually need symbolic
variables, functions, regular numb
> -If the constants are different: it is really easy to compute any
> expression of general solutions of equation. And what is better it is
> also really easy to compare two solutions being the same. If sol1-sol2
> is constant then solutions sol1 and sol2 are equal (the same)
> So in my opinion it
> I am not sure if this will work for DE's involving term like y'(a*x
> +b). But if you find a secure method how to find dependent and
> independent variables from derivative, you can also fix
> bughttp://trac.sagemath.org/sage_trac/ticket/7401
Neither Maple nor Maxima can solve the differential
Actually I finished the improvements I mentioned. And even more - I
developed simple type checking and function which return subexpression
of given expression by given symbolic type.
But I still have questions:
1. Is there an easy way to check if some class belongs to package in
python?
2. Where s
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