中文摘要：

介绍了一般线性方法的某 invariants 和能量守恒定律的研究的焦点适用于微分方程系统。二次的 invariants 的信息；symplectic 结构的保存；多重 Runge-Kutta 方法上的细节；一个腿方法的方程。

英文摘要：

Focuses on a study which presented some invariants and conservation laws of general linear methods applied to differential equation systems. Information on the quadratic invariants; Conservation of symplectic structure; Details on the multiple Runge-Kutta methods; Equations of the one-leg methods.