伽罗瓦场中的矩阵指数2

时间:2015-01-12 06:18:31

标签: matlab matrix

我对伽罗瓦域2中矩阵的取幂感到困惑。假设我有一个用伽罗瓦域2(GF2)表示的矩阵。我想取幂数为30.也就是说,

A^30

在matlab中我们有两种方法可以做到。

首先,我们执行A power 30并取2的mod(注意A是双矩阵)

 A1=mod(A^30,2)

第二种方法,我们将A转换为galois矩阵并取幂运算

A=gf(A,2)
A2=A^30

实际上,两种方式必须相同。但是,当我检查A1和A2时。他们有不同的结果。这里发生了什么?谢谢 让我看看我的A矩阵

A =

     1     1     0     1     1     1     0     1     0     0     0     1     0     1     0
     0     0     0     1     0     1     0     0     0     0     0     0     0     1     0
     0     0     0     0     0     0     0     0     1     0     1     0     0     0     1
     1     0     1     1     0     0     0     0     0     0     1     1     1     0     0
     1     0     1     0     0     0     0     1     0     0     0     0     0     0     0
     0     1     0     1     1     1     1     1     0     1     1     1     1     0     1
     0     0     0     1     0     0     0     1     0     0     1     0     0     0     0
     0     0     0     0     1     0     0     0     0     0     0     0     0     0     0
     1     0     0     1     0     1     0     0     0     1     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     1     0     0     1     1
     1     0     1     0     0     0     0     0     0     0     1     0     0     0     1
     0     1     0     0     0     0     0     1     0     0     0     0     0     0     0
     1     0     1     1     1     1     1     1     1     0     1     1     1     0     1
     0     1     0     0     0     1     0     0     0     1     0     0     0     1     0
     1     0     0     1     0     1     0     0     0     1     0     0     0     1     1

方法一:

A1=

     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     0     0     0     0     0

方法2

A2 =

     1     1     0     1     1     1     0     1     0     0     0     1     0     1     0
     0     0     0     1     0     1     0     0     0     0     0     0     0     1     0
     0     0     0     0     0     0     0     0     1     0     1     0     0     0     1
     1     0     1     1     0     0     0     0     0     0     1     1     1     0     0
     1     0     1     0     0     0     0     1     0     0     0     0     0     0     0
     0     1     0     1     1     1     1     1     0     1     1     1     1     0     1
     0     0     0     1     0     0     0     1     0     0     1     0     0     0     0
     0     0     0     0     1     0     0     0     0     0     0     0     0     0     0
     1     0     0     1     0     1     0     0     0     1     0     0     0     0     0
     0     0     0     0     0     0     0     0     0     0     1     0     0     1     1
     1     0     1     0     0     0     0     0     0     0     1     0     0     0     1
     0     1     0     0     0     0     0     1     0     0     0     0     0     0     0
     1     0     1     1     1     1     1     1     1     0     1     1     1     0     1
     0     1     0     0     0     1     0     0     0     1     0     0     0     1     0
     1     0     0     1     0     1     0     0     0     1     0     0     0     1     1

0 个答案:

没有答案