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2024-09-22 14:55:11 +0200 | commented answer | How to obtain a linear space from the direct sum of two spaces? Hi, this means that there exists no feasible way to the problem on Sage? There exists no feasible way to the problem on |
2024-09-22 14:53:49 +0200 | commented answer | How to obtain a linear space from the direct sum of two spaces? Hi, this means that there exists no feasible way to the problem on Sage? |
2024-09-19 18:27:18 +0200 | commented answer | How to obtain a linear space from the direct sum of two spaces? Thank you very much! Even using the condition while W2.intersection(W1).dimension() != 0:, I also do not get a successfu |
2024-09-19 18:21:05 +0200 | received badge | ● Commentator |
2024-09-19 18:21:05 +0200 | commented answer | How to obtain a linear space from the direct sum of two spaces? Thank you very much! Even using the condition while W2.intersection(W1).dimension() != 0:, I also do not get a successfu |
2024-09-19 16:48:26 +0200 | commented answer | How to obtain a linear space from the direct sum of two spaces? Thanks! But I seem not to get a successful test! def random_small_space_gen(t,m): B = matrix(GF(q),t,m,0) whil |
2024-09-19 11:38:34 +0200 | marked best answer | How to fast generate a matrix with columns of fixed hamming weight Dear all, How to generate a matrix whose columns have fixed hamming weight in the finite field GF(2) ? I hope for a fast method for a huge matrix, for example, rows 150000, columns 4000, weight 250. Thanks all! |
2024-09-19 10:59:51 +0200 | asked a question | How to obtain a linear space from the direct sum of two spaces? How to obtain a linear space from the direct sum of two spaces? Dear all, Given a linear space $V$ of dimension $m$ ove |
2024-09-19 10:00:18 +0200 | marked best answer | How to define q-polynomial in a finite field GF(q^m)? Dear all, A $q$-polynomial of $q$-degree $r$ in $GF(q^m)$ is a polynomial of the form $P(x) = \sum_{i=0}^{r}p_ix^{q^i}$ for $p_i \in GF(q^m)$, $p_r\neq 0$. How to define this $q$-polynomial in $GF(q^m)$? I do not find this and its operations in Reference Manual. |
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2024-04-29 17:26:20 +0200 | commented answer | How to fast generate a matrix with columns of fixed hamming weight Thanks! This is a clever method. But it takes about 40 seconds for NROWS, NCOLS, WEIGHT = 150000, 4000, 250. I found a |
2024-04-29 17:25:22 +0200 | commented answer | How to fast generate a matrix with columns of fixed hamming weight Thanks! This is a clever method. But it takes about 40 seconds for NROWS, NCOLS, WEIGHT = 150000, 4000, 250. I found a |
2024-04-29 17:24:43 +0200 | commented answer | How to fast generate a matrix with columns of fixed hamming weight Thanks! This is a clever method. But it takes about 40 seconds for NROWS, NCOLS, WEIGHT = 150000, 4000, 250. I found a |
2024-04-29 17:08:12 +0200 | commented question | How to fast generate a matrix with columns of fixed hamming weight Thanks!It is better if such a matrix is random. I have found a method that costs about 3s. |
2024-04-29 06:41:17 +0200 | commented question | How to fast generate a matrix with columns of fixed hamming weight No random matrix! A matrix of size 150000 \times 4000, whose each column has a fixed hamming weight of 250. If using t |
2024-04-29 04:49:10 +0200 | edited question | How to fast generate a matrix with columns of fixed hamming weight How to fast generate a matrix with columns of fixed hamming weight Dear all, How to generate a matrix whose columns hav |
2024-04-29 04:47:42 +0200 | asked a question | How to fast generate a matrix with columns of fixed hamming weight How to fast generate a matrix with columns of fixed hamming weight Dear all, How to generate a matrix whose columns hav |
2024-03-09 16:32:18 +0200 | marked best answer | How to generate random vector with specific hamming weight in GF(q) ? Dear all, How to generate random vectors with a specific hamming weight in the finite field GF(q) ? Thanks! |
2024-03-09 11:25:43 +0200 | asked a question | How to generate random vector with specific hamming weight in GF(q) ? How to generate random vector with specific hamming weight in GF(q) ? Dear all, How to generate random vectors with a s |
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2023-02-12 14:44:24 +0200 | edited question | q-polynomial and Rank Decoding Problem q-polynomial and Rank Decoding Problem Dear all, For the Rank Decoding (RD) problem: Given $y=mG+e$ , random row full- |
2023-02-10 02:28:57 +0200 | commented question | How to define q-polynomial in a finite field GF(q^m)? I have other questions. Look at https://ask.sagemath.org/question/66323/q-polynomial-and-rank-decoding-problem/ |
2023-02-10 02:28:03 +0200 | asked a question | q-polynomial and Rank Decoding Problem q-polynomial and Rank Decoding Problem Dear all, For the Rank Decoding (RD) problem: Given $y=mG+e$ , random row full- |
2023-02-10 01:54:02 +0200 | commented question | How to define q-polynomial in a finite field GF(q^m)? I have other questions. |
2023-02-10 01:52:04 +0200 | commented question | How to define q-polynomial in a finite field GF(q^m)? For the RD problem, since all coordinates of $\bm e=(e_1,e_2,...,e_n)$ of weight $r$ lie in the same support (a subspace |
2023-02-09 12:23:08 +0200 | commented question | How to define q-polynomial in a finite field GF(q^m)? Thanks very much!!! |
2023-02-09 12:19:59 +0200 | edited question | How to define q-polynomial in a finite field GF(q^m)? How to define q-polynomial in a finite field GF(q^m)? Dear all, A $q$-polynomial of $q$-degree $r$ in $GF(q^m)$ is a po |
2023-02-09 04:04:21 +0200 | edited question | How to define q-polynomial in a finite field GF(q^m)? How to define q-polynomial in a finite field GF(q^m)? Dear all, A $q$-polynomial of $q$-degree $r$ in $GF(q^m)$ is a po |
2023-02-09 03:57:34 +0200 | edited question | How to define q-polynomial in a finite field GF(q^m)? How to define q-polynomial in a finite field GF(q^m)? Dear all, A $q$-polynomial of $q$-degree $r$ in $GF(q^m)$ is a po |
2023-02-09 03:57:01 +0200 | edited question | How to define q-polynomial in a finite field GF(q^m)? How to define q-polynomial in a finite field GF(q^m)? Dear all, A $q$-polynomial of $q$-degree r in $GF(q^m)$ is a poly |
2023-02-09 03:55:29 +0200 | asked a question | How to define q-polynomial in a finite field GF(q^m)? How to define q-polynomial in a finite field GF(q^m)? Dear all, A $q$-polynomial of $q$-degree r in $GF(q^m)$ is a poly |
2022-12-03 16:26:36 +0200 | received badge | ● Popular Question (source) |
2022-02-26 09:44:50 +0200 | commented answer | Generating an invertible matrix over a finite field Yes! thanks! |
2022-02-26 09:44:46 +0200 | marked best answer | Generating an invertible matrix over a finite field How to generate an invertible matrix over a finite field? |
2022-01-20 09:06:36 +0200 | received badge | ● Student (source) |
2022-01-20 04:04:59 +0200 | edited question | Generating an invertible matrix over a finite field Generating an invertible matrix over a finite field? How to generate an invertible matrix over a finite field? |
2022-01-20 04:02:53 +0200 | asked a question | Generating an invertible matrix over a finite field Generating an invertible matrix over a finite field? How to generate an invertible matrix over a finite field? |
2021-05-09 04:37:00 +0200 | commented question | How to make the product of two linear spaces? No cartesian_product. I only know this method with poor efficiency. Do you have other efficient methods? q = 2 ; m = 22 |
2021-05-09 04:28:08 +0200 | commented question | How to delete several vectors from a vector space? q = 2 ; m = 229; n = 83; r = 8 Fqm = GF(q^m) def gen_vec_space(t): # generate a vector space of dimension t over Fq |
2021-05-09 04:27:56 +0200 | commented question | How to delete several vectors from a vector space? q = 2 ; m = 229; n = 83; r = 8 Fqm = GF(q^m) def gen_vec_space(t): # generate a vector space of dimension t over Fq |
2021-05-09 04:25:04 +0200 | commented question | How to delete several vectors from a vector space? q = 2 ; m = 229; n = 83; r = 8 Fqm = GF(q^m) def gen_vec_space(t): # generate a vector space of dimension t over Fq |
2021-05-09 04:24:30 +0200 | commented question | How to delete several vectors from a vector space? q = 2 ; m = 229; n = 83; r = 8 Fqm = GF(q^m) def gen_vec_space(t): # generate a vector space of dimension t over Fq |