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RE: List manipulation


Xun,

I think you want...

<< LinearAlgebra`MatrixManipulation`

(A = BlockMatrix[{{a, b}, {c, d}}]) // MatrixForm

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/ 


From: xun [mailto:xiaoxun at gmail.com]
To: mathgroup at smc.vnet.net

Hello,

I have something as following:

a = Array[aa, {3, 3}];
b = Array[bb, {3, 3}];
c = Array[cc, {3, 3}];
d = Array[dd, {3, 3}];
A = {{a, b}, {c, d}} (* A consists of four blocks *)
A // MatrixForm

And I want a 6*6 matrix (a list of 6 lists) just as A looks like.
For example, the first row should be

aa[1,1],aa[1,2],aa[1,3],bb[1,1],bb[1,2],bb[1,3]

etc....

How to get it easily?

Many thanks.
Xun 




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