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Structure-Preserving Algorithms for Dynamical Systems

机译:动力系统的结构保全算法

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摘要

We study structure-preserving algorithms to phase space volume for linear dynamical systems y=Ly for which arbitrarily high explicit symmetric structure-preserving schemes, i.e. the numerical solutions generated by the schemes satisfy det (ay_1/ay_0)= e~htrL, where trL is the trace of matrix L, can be constructed. For nonlinear dynamical system y=f(y) Feng-Shang first-order volume-preserving scheme can be also constructed starting from modified θ-methods and is shown that the scheme is structure-preserving to phase space volume.
机译:我们研究线性动力系统y = Ly的相空间量的结构保持算法,该系统任意高的显式对称结构保持方案,即,由方案生成的数值解满足det(ay_1 / ay_0)= e〜htrL,其中trL是矩阵L的迹线,可以构造。对于非线性动力系统y = f(y),也可以从修改后的θ方法开始构造奉尚一阶体积守恒方案,并证明该方案对相空间体积具有结构守恒性。

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