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Re: Block diagonal matrices

• To: mathgroup at smc.vnet.net
• Subject: [mg90267] Re: Block diagonal matrices
• From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
• Date: Fri, 4 Jul 2008 03:56:05 -0400 (EDT)
• Organization: The Open University, Milton Keynes, UK
• References: <g4i90e$3ab$1@smc.vnet.net>

yo at kth.se 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:

http://mathworld.wolfram.com/BlockDiagonalMatrix.html

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

Regards,
- Jean-Marc

[1] Rowland, Todd and Weisstein, Eric W. "Block Diagonal Matrix." From 
MathWorld--A Wolfram Web Resource. 
http://mathworld.wolfram.com/BlockDiagonalMatrix.html