We relate the classical and post-Lie Magnus expansions. Intertwining algebraic and geometric arguments allows to placing the classical Magnus expansion in the context of Lie group integrators.

中文翻译：

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马格努斯展开和后李代数

我们将经典和后李马格努斯展开联系起来。交织的代数和几何参数允许将经典马格努斯展开置于李群积分器的上下文中。