what is the output you get? I can't reproduce this:
sage: A.LU()
(
[1 0 0 0]  [1 0 0 0]  [ 1  1  0 -1 -1]
[0 1 0 0]  [0 1 0 0]  [ 0  1  1 -1  1]
[0 0 1 0]  [0 0 1 0]  [ 0  0  0  0  0]
[0 0 0 1], [0 0 0 1], [ 0  0  0  0  2]
)


On Sunday, March 6, 2016 at 4:53:27 PM UTC, [email protected] wrote:
>
> A=matrix(QQ,[[ 1, 1, 0, -1, -1 ],
>              [ 0, 1, 1, -1,  1 ],
>              [ 0, 0, 0,  0,  0 ],
>              [ 0, 0, 0,  0,  2 ]])
> A.LU()
>
> results in U not in row echelon form
>
> 'SageMath Version 7.0, Release Date: 2016-01-19'
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to [email protected].
To post to this group, send email to [email protected].
Visit this group at https://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Reply via email to