逆元素

三对角矩阵的逆元素表示式的新证明

A Note on an Expression for Inverse Elements of Tridiagonal Matrix

一类三对角矩阵逆元素的估计式

Estimation on the inverse elements of a certain tridiagonal matrix

我们称-a为a的加性逆元素。

We call - a the additive inverse of a.

本文给出了严格对角占优的周期三角矩阵逆元素的上界估计。

In this paper , we give the upper bounds for inverse elements of strictly diagonally dominant periodic tridiagonal matrices .

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。

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 .

允许气水火土元素及其逆元素以太，蒸汽，烟或灰烬以及熔岩找到其办法来极好平衡，以将气候带入平衡当中。

Intend that air water fire and earth elements along with ether vapor smoke and lava inverse elements find their way to the perfect balance to bring the weather to balance .

三对角矩阵的条件数计算，部分逆元素的计算及线性方程组求解等问题都涉及到该类矩阵的逆。

The inverses are necessary in many problems , such as the computation of the condition number of this matrix , the computation of the " partial inverse elements " in some engineering problems and the solution of linear system whose coefficient matrix is tridiagonal or block tridiagonal .

FDSR算法主要思想为，先在基因排列中找降序小队，在其末元素和逆相邻元素之间作相应的翻转操作。

The soul of FDSR Algorithm is finding the descending strip in permutation and then make a corresponding reversal operation between the last item and the con-adjacent one every time .

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。

With the LU decomposition of the block tridiagonal matrix , an explicit expression of the block inverse elements is obtained .

由于有限域上的运算中，计算域元素的逆元以及域元素相乘是消耗时间最多的两个部分，因此对它们的研究本文给予了特别的重视。

The main focus concentrates on the two most time consuming arithmetic in finite field calculation , field inversion and field multiplication .

本文对投资组合分析中的协方差矩阵的逆矩阵进行推导，并分析该逆矩阵的构成元素的现实意义和应用价值，然后对投资者风险资产最优持有量的本质进行解释。

This paper empathizes on the derivation and application of the inverse of the covariance matrix in portfolio analysis . As we show , the inverse matrix is meaningful to investors ' optimal holdings of risk assets .