查询词典 matrices

Finally,a new partial ordering in the subset of universal nonnegative definite matrices is defined and.

最后讨论了泛非负定子集类上的一种新的矩阵偏序的性质与充要条件。

The value of information depends on its structure which is characterized by the joint probability matrix of information variable and state variable, we have defined some partial ordering over the matrices, our main results provide some sufficient conditions, which described by the partial ordering,for the value of information to increase.

信息结构由状态变量与信息变量联合概率矩阵来描述。我们定义了矩阵的一些偏序，通过这些偏序给出了信息价值的比较关系。

Part 4 (chapter5) The weighted-star partial ordering is defined, some characterizations are given using the weighted inverse, and the relation between the partial ordering with the existing partial ordering of the matrices are discussed.

4利用加权广义逆定义复数域上矩阵的加权*序，给出它们的若干性质和等价刻划，讨论它们与已有的矩阵偏序之间的关系，并推广关于矩阵*序的有关结果。

These are matrices that may be partitioned.

这是一些能分割的矩阵。

B Consider the Hamiltonian , where n is a unit vector and are Pauli matrices (α= x, y, z).

考虑哈密顿量，其中 n 是单位向量及为泡利矩阵(α= x， y， z)。

Aim The Hamiltonian is transformed from Pauli matrices to Hubbard operators.

目的把用Pauli矩阵表示的哈密顿量转化成用Hubbard算符表示。

This gives birth to Schur complement and Perron complement, which now become two important tools in studying matrices.

矩阵Schur补，Perron补的概念应运而生，成为研究矩阵不可或缺的重要工具。

In [2], Kirkland characterizes the limit points for algebraic connectivity of trees in terms of Perron values of certain positive matrices, and finds the four largest elements of limit points for algebraic connectivity of trees together with the corresponding branches.

Kirkland在文献[2]中用正矩阵Perron值的方法刻划了树的代数连通度的极限点，并给出了树的代数连通度的前四大值和达到这些数值相应的分支。

Utilizequadratic form and Perron value of bottleneck matrices, we study how the algebraic connectivityof a weighted tree changes under shifting its branches and changing its edge s weights and obtainmore entire information about algebrai.

利用代数连通度的二次型形式和瓶颈矩阵的Perron值，我们研究了当迁移或改变分支和变动一些边的权重时树的代数连通度的变化，得到了比过去更多的关于赋权树的代数连通度的结论。

Nonnegative Matrices ; Spectral ; Perron Root ; Estimation ; Algorithm ; Application

吉林大学；吕洪斌非负矩阵；谱； Perron根；估计；算法；应用

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。