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MathGroup Archive 1996

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matrix algebra

  • To: mathgroup at smc.vnet.net
  • Subject: [mg3683] matrix algebra
  • From: garciajb at ucunix.san.uc.edu (Juan Garcia Velo)
  • Date: Fri, 5 Apr 1996 02:53:18 -0500
  • Organization: Aerospace Engineering, U. of Cincinnati
  • Sender: owner-wri-mathgroup at wolfram.com

Does anybody know of a package of functions and operators that can deal
with partitioned matrices? Example: 
mat_a = [ a b ]    mat_b = [ d c ]
        [ c d ]            [ b a ]
where a, b, c, d are matrices (although not necessarily defined) of
appropriate dimensions. Then I can do MULT[mat_a,mat_b] and get
mat_c = [ a d + b b    a c + b a ]
        [ c d + d b    c c + d a ]
without any attempt of changing the order in the products defining the
elements of mat_c, because they are matrices, obviously.

I already explored the wolfram web site and didn't find anything.
Thanks,

Juan

-- 
Juan Garcia-Velo                                     garciajb at ucunix.san.uc.edu
Aerospace Engineering, ML 70
University of Cincinnati                       My .sig file does not accurately
Cincinnati, OH 45221, USA                      reflect the owner's creativity.

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