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arXiv 2008.12176math-phmath.DSmath.MPphysics.class-ph
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一般自治ODE系统的Hamilton形式:低维例子

Hamiltonian form for general autonomous ODE systems: Low dimensional examples

Artur Kobus

摘要:

本文致力于保持一个简单的目标:我们希望提供可约化为偶数维的自治动力系统的Hamilton标准形。沿着这条路,我们构造了一类新的守恒量,称为有效守恒量,它与传统的第一积分具有不同的性质(例如,有效守恒量的微分是Pfweian形式)。我们并不把讨论局限于物理学;我们考虑来自生物学和化学的例子,为如何在发生的问题中使用框架提供直接的方法。展望了几何数值方法的应用前景。

英文摘要:

Paper is devoted to maintaining the simple objective: We want to provide Hamiltonian canonical form for autonomous dynamical system reducible to even-dimensional one. Along the road we construct new class of conserved quantities, called effectively conserved, that have dissimilar properties to traditional first integrals (e.g. differential of effectively conserved quantity being a Pfaffian form). We do not confine the discussion to physics; we consider examples from biology and chemistry, giving direct recipe for how to engage the framework in occurring problems. Perspective for future application in geometric numerical methods is given.

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