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MathGroup Archive 2004

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Re: Matrix Expansion question to Mathgroup

  • To: mathgroup at
  • Subject: [mg47842] Re: Matrix Expansion question to Mathgroup
  • From: Harold.Noffke at (Harold Noffke)
  • Date: Wed, 28 Apr 2004 06:56:37 -0400 (EDT)
  • References: <c6d8m2$ji6$>
  • Sender: owner-wri-mathgroup at


Your question is not trivial, because what you have is a rank-3
tensor, and I was not able to get AppendRows and AppendColumns to work
for rank-3 tensors A and B in a simple programming example.  It is
obvious that each of your matrix elements are lists, and the only
lists you want affected by AppendRows and AppendColumns are the
outermost two -- i.e., in dimensions 1 and 2.

MathGroup ... Do we have packages available which extend AppendRows
and AppendColumns to tensors?


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