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arXiv 1906.12290math.APmath.FA
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隐函数问题中的数据量与非线性薛定谔系统的奇异扰动

Size of data in implicit function problems and singular perturbations for nonlinear Schrödinger systems

Pietro Baldi, Emanuele Haus

摘要:

本文研究了数据的大小和正则性问题,以及正则性损失的隐函数问题的解。首先,我们给出了一个启发式的解释,Ekeland和Séré发现的最佳数据大小与他们最近的非二次版本的纳什-莫泽定理也可以恢复,为一大类非线性问题,与二次计划。然后证明了这种启发式观测适用于Métivier,Rauch,Texier,Zumbrun,Ekeland,Séré研究的非线性Schr dinger系统的奇异扰动Cauchy问题.使用“自由流分量”分解和应用抽象的Nash-Moser-Hörmander定理,我们改进了现有的结果,关于数据的大小和解决方案的规律性。

英文摘要:

We investigate a general question about the size and regularity of the data and the solutions in implicit function problems with loss of regularity. First, we give a heuristic explanation of the fact that the optimal data size found by Ekeland and Séré with their recent non-quadratic version of the Nash-Moser theorem can also be recovered, for a large class of nonlinear problems, with quadratic schemes. Then we prove that this heuristic observation applies to the singular perturbation Cauchy problem for the nonlinear Schrödinger system studied by Métivier, Rauch, Texier, Zumbrun, Ekeland, Séré. Using a "free flow component" decomposition and applying an abstract Nash-Moser-Hörmander theorem, we improve the existing results regarding both the size of the data and the regularity of the solutions.

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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