Let me explain my needs. MatrixSymbol supports basic matrix operations like
With
X = MatrixSymbol('X', 3, 3)
Y = MatrixSymbol('Y', 3, 3)
(X*Y).T will give me
T T
Y ⋅X
I just wanted to try similar properties of "kronecker product" i.e
KP(X,Y).T = KP(X.T, Y.T). What is the best way to implement these?
What if I want to try some basic decompositions, say KP(X,Y) = KP(X,I_m)
KP(X,I_n)?
I am just a beginner in to sympy. Should I implement some new methods to
work on kronecker product (http://en.wikipedia.org/wiki/Kronecker_product)
on matrix symbols?
Thank you for your previous comments.
On Wednesday, July 24, 2013 2:05:53 PM UTC+5:30, Stefan Krastanov wrote:
>
> Well, these two modules do not have anything in common, they are not meant
> to be inter-operable.
>
> The matrixexpr do not have a notion of basis, vector space or linear
> operator. `MatrixSymbol` is meant to represent a matrix, not an operator
> (though if you wish, you can make the mental assumption that you are
> working in certain basis and just consider all matrices to be operators).
>
> The quantum module has all this (different bases, Hilbert spaces,
> operators, etc). If that is what you need just use it.
>
> There is also the `diffgeom` module for differential geometry which you
> might find useful depending on what exactly you want to do.
>
>
> On 24 July 2013 10:22, Sreeraj Rajendran <[email protected]
> <javascript:>>wrote:
>
>> Stefan,
>>
>> My imports
>> from sympy.physics.quantum import TensorProduct
>> from sympy import MatrixSymbol
>>
>>
>> On Wednesday, July 24, 2013 1:35:38 PM UTC+5:30, Stefan Krastanov wrote:
>>
>>> From what submodules of sympy are you importing these classes?
>>>
>>>
>>> On 24 July 2013 09:38, Sreeraj Rajendran <[email protected]> wrote:
>>>
>>>>
>>>> Hi,
>>>>
>>>> With
>>>> X = MatrixSymbol('X', 3, 3)
>>>> Y = MatrixSymbol('Y', 3, 3)
>>>>
>>>> TensorProduct(X,Y) throws me the following error
>>>> AttributeError: 'MatrixSymbol' object has no attribute 'args_cnc'
>>>>
>>>> TensorProduct(Matrix(X),**Matrix(Y)) works fine.
>>>> Is tensorproduct over matrixsymbols is currently under development or
>>>> am I doing something terribly wrong?
>>>>
>>>> --
>>>> Regards
>>>> Sreeraj Rajendran
>>>> http://home.iitb.ac.in/~**rsreeraj <http://home.iitb.ac.in/%7Ersreeraj>
>>>>
>>>>
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