Re: Questions about RoxReduce
- To: mathgroup at smc.vnet.net
- Subject: [mg23920] Re: Questions about RoxReduce
- From: Murray Eisenberg <murray at math.umass.edu>
- Date: Fri, 16 Jun 2000 00:57:00 -0400 (EDT)
- Organization: Mathematics & Statistics, Univ. of Mass./Amherst
- References: <8i9o0b$28l@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
What would the "correct" behavior of such a function be? The difficulty
is that, whereas the Gauss-Jordan form, provided by RowReduce, is
unique, the echelon form you desire is not. For example:
A = {{1, 2}, {0, 1}}; (* already echelon form *)
RowReduce[A] (* result also echelon form *)
{{1, 0}, {0, 1}}
jmcornil wrote:
>
> I have a few questions about the function RowReduce.
>
> Please see the attached NoteBook....
>
> 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 ?
P.S. When including the ASCII text of a notebook in e-mail, it's
probably a good idea NOT to include the line
(*CacheID: 232*)
and NOT to include the cache at the end of the file.
--
Murray Eisenberg murray at math.umass.edu
Mathematics & Statistics Dept. phone 413 549-1020 (H)
Univ. of Massachusetts 413 545-2859 (W)
Amherst, MA 01003-4515