2012-02-26 20:37, Albert skrev:
> I mean for example:
A = matrix(QQ,[[1,2,3],[4,5,6],[7,8,9]])
A.submatrix([1,3],[1,3])
==> [1,3]
[7,9]
It seems to me that you want to write:
A[[0,2], [0, 2]]
==>
[1 3]
[7 9]
(Sage Version 5.0.beta5)
/ johan
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