Revision history [back]
 | 1 | initial version |
sage: D = matrix(QQ, 2, [[1, 2], [3, 4]]); D
[1 2]
[3 4]
sage: m = D.nrows()
sage: M = matrix(QQ, m, lambda i, j: D[(j-i)%m, (-i)%m]); M
[1 3]
[4 2]
| | 1 | initial version |
sage: D = matrix(QQ, 2, [[1, 2], [3, 4]]); D
[1 2]
[3 4]
sage: m = D.nrows()
sage: M = matrix(QQ, m, lambda i, j: D[(j-i)%m, (-i)%m]); M
[1 3]
[4 2]
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