With the LU decomposition of the blocktridiagonalmatrix, an explicit expression of the block inverse elements is obtained.
由块三对角矩阵的LU分解,得到了其逆矩阵块元素的显式表达式。
2
A new algorithm of solving blocktridiagonal systems is proposed, which is based on the special factorization of blocktridiagonalmatrix.
根据块三对角矩阵的特殊分解,给出了求解块三对角方程组的新算法。
3
A new algorithm of solving circulant blocktridiagonal systems is proposed, which is based on the special factorization of circulant blocktridiagonalmatrix.