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。
The estimation on the inverse elements of strictly diagonally dominant tridiagonal matrix is established; in this estimation, the nonnegative condition of matrix elements is moved.
利用严格对角占优和三对角矩阵的某些特性，推导出严格对角占优三对角矩阵逆元素的统一估计式。
In this paper, we give the estimates for the upper and lower bounds on the inverse elements of strictly diagonally dominant periodic tridiagonal matrices, and improve the latest findings.
本文给出了严格对角占优周期三对角矩阵逆元素上界和下界的估计，改进了一些学者近期的研究结果。
In this paper, we consider the best approximation of a matrix under a given linear restriction with some fixed elements. This result can be apply to solving a class matrix inverse eigenvalue problem.
本文研究具有某些固定元素的矩阵在线性约束下的最佳逼近，其结果可以用于解一类矩阵反特征值问题。
An damage indicator was defined to determine the location of structural damage elements, and the proper testing modal modes used in the inverse computation could be selected accordingly.
基于模态力余量，定义了一种损伤指标来预先判定结构损伤单元的位置，并可据此选取合适的测试模态阶数进行反演计算。
We differentiate the sorted inverse of the QAM signals, to get a sparse signal with only a few non-zero elements.
我们将接受的QAM信号取反排序后进行差分，获得了稀疏信号。
For two dimensional inverse electromagnetic field problems, the range of movable points is extended by use of high order finite elements.
本文在优化区域边界的二维电磁场逆问题中，应用高阶有限元，增大了可变动节点的变化范围。
For two dimensional inverse electromagnetic field problems, the range of movable points is extended by use of high order finite elements.
本文在优化区域边界的二维电磁场逆问题中，应用高阶有限元，增大了可变动节点的变化范围。
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