Comment #3 on issue 1336 by fredrik.johansson: Arbitrary constant type
http://code.google.com/p/sympy/issues/detail?id=1336
Interesting idea. How do you determine what and what not to fold into the
constant?
For example, suppose you have a function f(x,y) where y is a parameter and
the
Comment #6 on issue 1336 by asmeurer: Arbitrary constant type
http://code.google.com/p/sympy/issues/detail?id=1336
That was a bad example. I should try to do math this soon after waking
up. The one I listed above in the
original issue is a better one. You get the idea anyway.
--
You
Comment #4 on issue 1304 by akshaysrinivasan: Integrate sqrt(x**2 + y**2)
fails
http://code.google.com/p/sympy/issues/detail?id=1304
Yes, but the problem is that M[b] which here is y**2 doesn't have
the is_positive
data descriptor.
I'm still confused whether a symbol is assumed to be real
Comment #3 on issue 1337 by ondrej.certik: find all instances in an
expression
http://code.google.com/p/sympy/issues/detail?id=1337
If you could make it more sophisticated, it'd be great. :)
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Comment #6 on issue 1304 by akshaysrinivasan: Integrate sqrt(x**2 + y**2)
fails
http://code.google.com/p/sympy/issues/detail?id=1304
Mateusz: You were right, I apologise for posting without looking closely.
I tried what you suggested, but ended up getting errors
sympy.polys.polynomial for
On Sat, Mar 21, 2009 at 9:37 PM, Aaron Meurer asmeu...@gmail.com wrote:
---
sympy/solvers/solvers.py | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/sympy/solvers/solvers.py b/sympy/solvers/solvers.py
index 60a1ef5..6d97225 100644
--- a/sympy/solvers/solvers.py
On Mar 21, 4:04 pm, Akshay Srinivasan akshaysriniva...@gmail.com
wrote:
On Mar 21, 3:52 pm, Vinzent Steinbergvinzent.steinb...@googlemail.com wrote:
Assumptions are currently borked in sympy (thus Fabian's rewrite). But
Indeed. The whole assumptions part looks very messy. I tried to each
of
Shouldn't it be better to implement the assumptions system with
specialised classes instead of using strings and some make-shift
classes ? A sort of abstraction layer, so to speak. Keeping the layer
itself small will make it easier to implement it in Cython and should
be enough to more than
Hey!
I played a bit with sympy and when trying to solve some quasilinear
differential equations, but had to first make sure that sympy can handle
some simpler forms of PDEs.
The patches can be seen from:
https://code.plaes.org/git/sympy/log/?h=pde-upstream
Cheers,
Priit :)
---
sympy/solvers/tests/test_solvers.py |6 ++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/sympy/solvers/tests/test_solvers.py
b/sympy/solvers/tests/test_solvers.py
index 389b661..017accf 100644
--- a/sympy/solvers/tests/test_solvers.py
+++
Why not fix the cause, instead of hiding the problem:
diff --git a/sympy/solvers/solvers.py b/sympy/solvers/solvers.py
index 60a1ef5..6d97225 100644
--- a/sympy/solvers/solvers.py
+++ b/sympy/solvers/solvers.py
@@ -584,7 +584,7 @@ def solve_ODE_first_order(eq, f):
n = Wild('n',
On Thu, Mar 19, 2009 at 1:13 PM, Brian Granger ellisonbg@gmail.com wrote:
Ondrej,
I need to take my kids somewhere but the answer to your question is
*yes absolutely*, you can interact with a controller and engine
running on a cluster somewhere from an ipython session on your laptop
On Sun, Mar 22, 2009 at 5:02 AM, asmeurer asmeu...@gmail.com wrote:
This is a great project; I hope this gets accepted.
• Am I missing anything important here?
* Implement the (generalized) hypergeometric differential equation and
add hypergeometric functions like Bessel and Airy functions to
On Mar 21, 3:45 pm, k yaukwan...@gmail.com wrote:
Thank you all.
Ondrej,
I tried again and I think the structure can be kept as is,
only that I the mutable default set([]) should be avoided since
it is assigned one per class.
You could also use frozenset(), which is immutable.
Vinzent
On Mar 21, 5:01 pm, Ondrej Certik ond...@certik.cz wrote:
On Sat, Mar 21, 2009 at 5:58 AM, Vinzent Steinberg
vinzent.steinb...@googlemail.com wrote:
What is the best way to replace tan(x) with sin(x)/cos(x)?
*.match() does not seem to be suited, because I don't care where tan
(x)
On 22 Mrz., 11:39, Vinzent Steinberg
vinzent.steinb...@googlemail.com wrote:
e.find() would be really useful, often you just want to find a term
and don't care whether it's nested in some other expressions.
It should be relatively easy to implement.
See
On Sun, Mar 22, 2009 at 9:13 AM, asmeurer asmeu...@gmail.com wrote:
On Mar 22, 3:55 am, Fredrik Johansson fredrik.johans...@gmail.com
wrote:
This is a great project; I hope this gets accepted.
Does sympy review the applications relating to it directly, or does
python choose for it. Perhaps
Hey,
Well, this is another application from someone interested in having
partial differential equations (PDE) support in Sympy :)
As you all might already know - solving PDEs is not easy and solving
them analytically is even harder. My plan is to tackle some useful
differential equations that
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