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MathGroup Archive 2000

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Re: matrices, dot products and convergents ofcontinued fractions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg23438] Re: [mg23402] matrices, dot products and convergents ofcontinued fractions
  • From: "Richard Finley" <rfinley at medicine.umsmed.edu>
  • Date: Wed, 10 May 2000 02:32:20 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Matt,
I am using Mathematica 4.0, although I don't think that makes a difference??  Anyway, sorry that I digressed from your original question but the answer is:
if you have a list of matrices: list = {matrix1,matrix2,matrix3,....matrixn} then you can take the dot product by:

MapThread[Dot, list, 0]    

Hope that helps.  regards, RF

>>> "Matt Herman" <Henayni at hotmail.com> 05/07/00 01:33PM >>>
>Richard,
>
>Do you have Mathematica 4 or 3? On mathematica 3, continuedfraction[a] gives
>the expansion that looks like1+1/a+1/b....
>So anyway, my problem is how to take the Dot product of a LIST of matrices!
>Dot works with [matrice1,matrice2,...,matricen], but not with
>Dot[{matrice1,matrice2,matrice3,...,matricen}]!
>
>Matt



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