Nicolas
No worries about deadlines - this looks excellent - thanks!
Will let you know how things go. This gives me lots to work with
Thanks again!
On May 1, 6:30 pm, "Nicolas M. Thiery" <nicolas.thi...@u-psud.fr>
wrote:
> Dear Ross,
>
> On Mon, Apr 19, 2010 at 06:38:31PM +0930, ross kyprianou wrote:
> > (Im trying to finish this in 2-3 weeks to include some results in a
> > paper but I understand that may not be possible)
>
> Oops, I just noticed this deadline of yours; I hope you will still
> make it! Please find attached a possible refactorisation of your code.
> Here is a short extract of the doc (to be run after loading the code):
>
> EXAMPLES::
>
> sage: Alg = SymbolicMatrixAlgebra(QQ)
>
> sage: A = Alg.matrix("A",3,2)
> sage: B = Alg.matrix("B",2,3)
> sage: C = Alg.matrix("C",2,3)
> sage: D = Alg.matrix("D",3,3)
>
> Example 1: Adding/Multiplying matrices of correct size::
>
> sage: A * (B + C)
> A B + A C
>
> Example 2: Transposing a sum of matrices::
>
> sage: (B + C).transpose()
> C^t + B^t
>
> Example 3: Transposing a product of matrices::
>
> sage: (A * B).transpose()
> B^t A^t
>
> Example 4: Inverting a product of matrices::
>
> sage: (A * B)^-1
> B^-1 A^-1
>
> Example 5: Multiplying by its inverse::
>
> sage: D * D^-1 # todo: not implemented
> I
>
> Enjoy, and let me know how it goes!
>
> Best,
> Nicolas
> --
> Nicolas M. Thiéry "Isil" <nthi...@users.sf.net>http://Nicolas.Thiery.name/
>
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> matrix.sage
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