不定矩阵是一个数学术语，指的是如果一个埃尔米特矩阵既不是半正定也不是半负定的，那么称其为不定矩阵。
首先给出了整数矩阵的定义及性质，然后讨论了它在求整数的最大公因数和解整系数不定方程中的应用。
This paper first gets definition and theorems of integers matrices, and then to discusses a new method to find the greatest common factor of integers and solves linear indeterminate equation.
它利用了不定导纳矩阵的概念，在符号网络函数的产生中应用了代数法与符号编码相结合的方法。
It is based on the concept of indefinite admittance matrix, and USES an algebraic method of symbolic code in the generation of symbolic network functions.
利用矩阵的初等列变换，给出了求解多元线性不定方程的一种方法，该方法改进了传统方法计算量大、步骤多的缺点。
By elementary rank transformations of matrix, a method has been obtained to solve linear diophantine equation with some variables. The method overcomes the deficiency of traditional method.
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