摘要
对主理想整环上的线性方程组作了初步探讨，推广了域上线性方程组的已知结果，并给出求解的几种新方法。
In this paper,we investgate the systems of Linear equations over a prinicipal ideal do-main, and generalize the known results over filds, at last, we gave some new methods forsolving systems of linear equations.
关键词
主理想整环
线性代数方程组
解
系数矩阵
principal ideal domains, invariant factors, matrix of coefficients
