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Re: Block diagonal matrices

yo at wrote:

> I hope you accept my apology for bothering you. I really need to convert a
> matrix (12x19) to its Block diagonal from. As far as  I searched in
> Mathematica software help center, I could not find the appropriate
> function. I would really appreciate if you could show me how to do this be
> Mathematica.

MathWorld's entry, "Block Diagonal Matrix" [1], might help:

(Note that it contains some Mathematica code to construct block diagonal 

- Jean-Marc

[1] Rowland, Todd and Weisstein, Eric W. "Block Diagonal Matrix." From 
MathWorld--A Wolfram Web Resource.

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