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本文给出了含几个未知函数的变系数线性微分系统,在自变量变换及因变量变换下的不变量,该不变量在可积线性微分系统的求解及构造上起着重要的作用。
In this paper, a variable coefficient linear differential system with several unknown functions is given. The invariant under the transformation of independent variables and dependent variables plays an important role in the solution and construction of integrable linear differential systems.