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MathGroup Archive 1999

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Dealing with submatrices

  • To: mathgroup at
  • Subject: [mg18099] Dealing with submatrices
  • From: Chris Hall <chall at>
  • Date: Thu, 17 Jun 1999 12:26:37 -0400
  • Delivery-date: Thu Jun 17 17:12:53 1999
  • Organization: Virginia Tech, Blacksburg, Virginia, USA
  • Sender: owner-wri-mathgroup at

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

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