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arXiv 0907.4661math.AP
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Nash-Moser迭代与奇异扰动

Nash--Moser iteration and singular perturbations

Benjamin Texier, Kevin Zumbrun

摘要:

我们提出了一个简单和易于使用的纳什-Moser迭代定理适合于奇异扰动问题承认正式的渐近展开或其他家庭的近似解取决于一个参数$\eps\to 0.$的新功能是允许损失的权力$\eps$以及通常的损失的衍生物的解决方案运营商为相关的线性化问题。我们表明这个定理的实用性,通过描述样本的应用程序(i)系统的准线性薛定谔方程,和(ii)存在的小振幅配置文件的准线性弛豫系统。

英文摘要:

We present a simple and easy-to-use Nash--Moser iteration theorem tailored for singular perturbation problems admitting a formal asymptotic expansion or other family of approximate solutions depending on a parameter $\eps\to 0.$ The novel feature is to allow loss of powers of $\eps$ as well as the usual loss of derivatives in the solution operator for the associated linearized problem. We indicate the utility of this theorem by describing sample applications to (i) systems of quasilinear Schrödinger equations, and (ii) existence of small-amplitude profiles of quasilinear relaxation systems.

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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