Revision history [back]
 | 1 | initial version |
You can create lists of rows and columns and use them to cut out a submatrix. E.g.
sage: M=matrix([[1,2,3,4],[3,4,5,6],[6,7,8,9]])
sage: M[[0,2],[0,2]]
[1 3]
[6 8]
| | 1 | initial version |
You can create lists of rows and columns and use them to cut out a submatrix. E.g.
sage: M=matrix([[1,2,3,4],[3,4,5,6],[6,7,8,9]])
sage: M[[0,2],[0,2]]
[1 3]
[6 8]
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