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arXiv 2404.17366math.APmath.FA
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扩展Gevrey正则性导论

An introduction to extended Gevrey regularity

Nenad Teofanov, Filip Tomić, Milica Žigić

AI总结:

本文针对初值问题在Gevrey框架下不适定等情形,介绍了扩展Gevrey正则性理论,为研究弱于传统Gevrey函数的光滑函数提供了系统框架,并综述了其对偶空间、微局部分析及应用。

摘要:

在考虑非解析光滑函数的正则性时,Gevrey类是最常见的选择。然而,在多种情形下,考虑超越Gevrey正则性的光滑性质十分重要,例如初值问题在Gevrey框架下不适定时。扩展Gevrey类为研究具有比任何Gevrey函数更弱正则性的光滑函数提供了便利的框架。由于该主题的现有文献较为分散,我们的目标是提供扩展Gevrey正则性的概述,并突出其最重要的特征。此外,我们考虑了相关的超分布对偶空间,并回顾了扩展Gevrey正则性背景下微局部分析的一些结果。最后,我们以几个精选的应用结束本文,以期激发对该主题的进一步研究。

英文摘要:

Gevrey classes are the most common choice when considering the regularities of smooth functions that are not analytic. However, in various situations, it is important to consider smoothness properties that go beyond Gevrey regularity, for example when initial value problems are ill-posed in Gevrey settings. Extended Gevrey classes provide a convenient framework for studying smooth functions that possess weaker regularity than any Gevrey function. Since the available literature on this topic is scattered, our aim is to provide an overview to extended Gevrey regularity, highlighting its most important features. Additionally, we consider related dual spaces of ultradistributions and review some results on micro-local analysis in the context of extended Gevrey regularity. We conclude the paper with a few selected applications that may motivate further study of the topic.

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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