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Questions about RoxReduce

  • To: mathgroup at smc.vnet.net
  • Subject: [mg23871] Questions about RoxReduce
  • From: jmcornil <jmcornil at club-internet.fr>
  • Date: Thu, 15 Jun 2000 00:51:09 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hello,

I have a few questions about the function RowReduce.

Please see the attached NoteBook

Thank You for answer

J.M. CORNIL

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I have a few questions about the function RowReduce, please see the atthached \
NoteBook.
\
\>", "Text"],

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Cell["\<\
The function RowReduce perform a Gauss-Jordan reduction putting
1 on the \"diagonal\" and 0 elsewhere so long it is possible. But is there 
an other function (or an option for RowReduce) performing a simple
Gauss reduction i.e. putting 0  ONLY UNDER the first diagonal ?

By the way I saw there is an option \"Method\" for the function.\
\>", "Text"],

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a function performing\na reduction up to a column number .  Such an option \
woud be useful in a case as follows \nto get equations of the image of a \
matrice. \n\nIf you let RowReduce working as it will, you also reduce the \
last column (since for\nformally the polynoms in  ",
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  " are not ZERO) and you cannot get the equations."
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Cell["Thanks very much for answer,", "Text"],

Cell["\<\
Jack-Michel CORNIL                    

VERSAILLES-FRANCE\
\>", "Subsubtitle"]
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