Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
| 2023-07-30 07:31:58 +0100 | received badge | ● Famous Question (source) |
| 2021-09-25 17:57:59 +0100 | received badge | ● Notable Question (source) |
| 2021-09-25 17:57:59 +0100 | received badge | ● Popular Question (source) |
| 2019-10-03 15:11:26 +0100 | asked a question | Matrix transformation of a LLL reduced basis Dear Sage Community, I am trying the way to obtain the matrix transformation of a LLL reduced basis, that is a matrix that gives the expression of the new lattice basis in terms of the old. In particular, I have a matrix X and the LLL reduced base Y (obtain by the LLL function of Sage: Y=X.LLL()) and I want a matrix T such that TX=Y. I try to solve the problem using solve.left() but the result is different from Magma. With a matrix X=[5 2] [1 4] [2 3], the T matrix in Sage is [ 0 0 0] [ 2/9 -1/9 0] [ 1/18 -5/18 0] while in Magma is [ -3 -6 10] [ -3 -7 11] [ -5 -11 18] Please could anyone help me to understand a way to have in SAGE the same result of Magma? |
Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.