Previously jacobian() was implemented in a hackish way and only allowed
calculating jacobians of row vectors. Now the whole algorithm
is implemented by a oneliner, everything else is just checks. A test was added
to make sure it works for any combination of row/column vectors.
Signed-off-by: Ondr
This example calculates all kinds of coordinate transformations and prints
useful information about them.
---
examples/advanced/curvilinear_coordinates.py | 109 ++
examples/all.py |1 +
2 files changed, 110 insertions(+), 0 deletions(-)
On Mar 24, 12:56 am, Fabian Seoane wrote:
> Added simple PDE solver for equations with separable variables.
>
> I think it doesn't work with functions that are not called f and g ...
> calling my unknown functions a and b raised:
>
> NotImplementedError: dsolve_PDE: Cannot solve D(a(x), x)/(2*x)
Added simple PDE solver for equations with separable variables.
> ---
> diff --git a/sympy/solvers/solvers.py b/sympy/solvers/solvers.py
> index 30722c0..fe6713d 100644
> --- a/sympy/solvers/solvers.py
> +++ b/sympy/solvers/solvers.py
> @@ -14,17 +14,17 @@
> """
>
> from sympy.core.sympify imp
Akshay Srinivasan wrote:
> 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 sho
On Mar 22, 4:13 pm, Akshay Srinivasan
wrote:
> 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 impleme
The link seems to be broken. This one should work:
https://code.plaes.org/git/sympy.git/log/?h=pde-upstream
Thank you for your contribution!
Vinzent
On Mar 22, 8:26 pm, Priit Laes wrote:
> Hey!
>
> I played a bit with sympy and when trying to solve some quasilinear
> differential equations, b
On Mar 23, 9:05 am, Ondrej Certik wrote:
> On Mon, Mar 23, 2009 at 12:00 AM, Priit Laes wrote:
>
> > On Mar 23, 8:02 am, Ondrej Certik wrote:
> >> On Sun, Mar 22, 2009 at 10:37 PM, Priit Laes wrote:
> >> I think this was suggested by Aaron's previous patch.
>
> > Ouch. I missed Aaron's previou
On Mon, Mar 23, 2009 at 12:00 AM, Priit Laes wrote:
>
>
>
> On Mar 23, 8:02 am, Ondrej Certik wrote:
>> On Sun, Mar 22, 2009 at 10:37 PM, Priit Laes wrote:
>> I think this was suggested by Aaron's previous patch.
>>
>
> Ouch. I missed Aaron's previous patch. But how about we add actually a
> so
On Mar 23, 8:02 am, Ondrej Certik wrote:
> On Sun, Mar 22, 2009 at 10:37 PM, Priit Laes wrote:
> I think this was suggested by Aaron's previous patch.
>
Ouch. I missed Aaron's previous patch. But how about we add actually a
solver for n == 1 case:
Added support for Bernoulli differential equ
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