permutation matrix

例句：

1. 1.The permutation matrix is used to rearrange the elements of a matrix.
   排列矩阵用于重新排列矩阵的元素。
2. 2.The permutation matrix is crucial for solving complex systems.
   排列矩阵对于解决复杂系统至关重要。
3. 3.The permutation matrix can be used to perform operations on matrices.
   排列矩阵可以用来对矩阵执行操作。