Santanu's profile - activity

2023-12-10 18:23:19 +0200	received badge	● Famous Question (source)
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2021-09-27 03:06:45 +0200	received badge	● Popular Question (source)
2020-09-27 12:00:58 +0200	asked a question	Unimodular transformation matrix of LLL algorithm I also asked this question on sage-support. I have a matrix `M1` with integer entries with 90 rows and 6 columns. After applying the LLL algorithm to M1, I get `M2 = M1.LLL()`. I want to get the corresponding unimodular transformation matrix `T` such that `T * M1 = M2`. We can find `T` by `T = M2 * M1.pseudoinverse()` or `T = M1.solve_left(M2)`, but determinant of `T` becomes `0` i.e., `T.det()` equals `0`. I want `T.det()` to equal `1`.
2019-10-20 15:00:26 +0200	received badge	● Student (source)
2019-10-20 13:22:12 +0200	asked a question	How to find common solution of inequalities in Sage I have few inequalities: 3 x1 + 5 x2 + 2 x3 + 5 x4 + 7 x5 <= 28 2 x1 + 0 x2 + 0 x3 + 8 x4 <= 14 4 x4 + 5 x5 <= 22 3 x2 <= 2 3 x4 >= 1 How to find common solution in Sage ? xi' s are either 0 or 1.