block tridiagonal matrix 块三对角阵 ; 分块三对角矩阵
periodic block tridiagonal matrix 周期块状三对角矩阵 ; 周期块三对角矩阵
m-block tridiagonal matrix M块三对角矩阵
circulant block tridiagonal matrix 分块循环三对角矩阵
periodic block-tridiagonal matrix 周期块状三对角矩阵
block tridiagonal coefficient matrix 块三对角系数矩阵
block period tridiagonal matrix 分块周期三对角矩阵
This new method reduces the computational complexity by using the block tridiagonal structure of the input sample correlation matrix, and at the same time keeps the property of fast convergence.
在保持了该算法快速收敛优点的同时，利用相关矩阵块三对角的特殊结构，降低了该算法的计算复杂度。
With the LU decomposition of the block tridiagonal matrix, 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。
A new algorithm of solving block tridiagonal systems is proposed, which is based on the special factorization of block tridiagonal matrix.
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。
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