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MathGroup Archive 1999

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Re: Dealing with submatrices

  • To: mathgroup at
  • Subject: [mg18137] Re: Dealing with submatrices
  • From: Jens-Peer Kuska <kuska at>
  • Date: Fri, 18 Jun 1999 00:51:41 -0400
  • Organization: Universitaet Leipzig
  • References: <7ka5m3$>
  • Sender: owner-wri-mathgroup at

Hi Chris,

the AddOn package


may help you. Especialy BlockMatrix[].


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.
> Thank you,
> Chris
> -----
> Christopher D. Hall                    (540) 231-2314
> Aerospace and Ocean Engineering        (540) 231-9632 (fax)
> Virginia Tech                
> Blacksburg VA 24061-0203

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