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arXiv 2009.10583math.DS
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几何奇异扰动理论中的多时标及参数化方法

Multiple timescales and the parametrisation method in geometric singular perturbation theory

Ian Lizarraga, Bob Rink, Martin Wechselberger

摘要:

提出了一种计算几何奇异扰动问题中慢流形及其快纤维丛的新方法。这种独立于坐标的方法受到Cabré,Fontich和de la Llave引入的参数化方法的启发。通过迭代求解所谓的共轭方程,我们的方法同时计算参数化的慢流形和快速纤维束,以及这些对象上的动态,以任意高的精度。我们展示了这种自上而下的方法在研究具有多个(即,三个或更多)时间尺度。特别是,我们强调了隐藏的时间尺度的出现,并展示了我们的方法如何发现这些令人惊讶的多个时间尺度结构。我们还将我们的参数化方法应用到几个反应网络问题。

英文摘要:

We present a novel method for computing slow manifolds and their fast fibre bundles in geometric singular perturbation problems. This coordinate-independent method is inspired by the parametrisation method introduced by Cabré, Fontich and de la Llave. By iteratively solving a so-called conjugacy equation, our method simultaneously computes parametrisations of slow manifolds and fast fibre bundles, as well as the dynamics on these objects, to arbitrarily high degrees of accuracy. We show the power of this top-down method for the study of systems with multiple (i.e., three or more) timescales. In particular, we highlight the emergence of hidden timescales and show how our method can uncover these surprising multiple timescale structures. We also apply our parametrisation method to several reaction network problems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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