representation of a matrix

It defines firstly the matrix representation of gird and proves that the Rank of simple graph conjunction matrix is a v-1 conjunction matrix and obtains the conjunction matrix of a directed graph of a thermodynamic system fluid grid by analyzing the fluid grid of a thermodynamic system.

首先定义了网络图的矩阵表示，证明了简单图的关联矩阵T的秩Rank（T）为v1，并对热力系统的流体网络图进行了分析，获得热力系统流体网络有向图的关联矩阵。

In this paper, the authors give a representation of the relation matrix of the cardinal product of two partial ordered sets by the tensor product of their relation matrices, which helps to obtain a kind of method to check the associative law of binary operation.

利用矩阵的张量积给出了偏序集基数积的一种矩阵表示，得到了检验有限集合上的代数运算满足结合律的一种方法。

By using the matrix representation of a digraph, some results about the index of convergence and period of a line digraph are obtained.

采用有向图的矩阵表示，得到了线有向图的幂敛指数和周期的有关结果。

In the appendix, a rigidity matrix representation of a boundary member such as the curved beam is presented.

在附录中列出边缘构件曲梁的刚度矩阵的形式。

The integral matrix representation of the endomorphism monoid of a graph has been given by the method of the algebraic topology, some simple properties of the integral matrix semigroup have been discussed.

通过代数拓扑的方法，给出了图的自同态摹群的整矩阵表示，并讨论了整矩阵半群的简单性质。