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Re: Dealing with submatrices


Chris Hall wrote:
> 
> I want to construct a 9x9 matrix using 9 existing 3x3 matrices:
> M = { {m11, m12, m13}, {m21, m22, m23}, {m31, m32, m33}}
> 
> The problem is that this creates a too-deep nested list and I can't
> figure out how
> to make it a 9x9.  Flatten doesn't appear to be the right tool.
> 

Chris,

the package LinearAlgebra`MatrixManipulation` (Mathematica 3.0) will serve you.

-Harald

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Harald Giese
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