An introduction to extended Gevrey regularity

Fuente: arXiv
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Autores principales: Teofanov, Nenad, Tomić, Filip, Žigić, Milica
Formato: Preprint
Publicado: 2024
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author Teofanov, Nenad
Tomić, Filip
Žigić, Milica
author_facet Teofanov, Nenad
Tomić, Filip
Žigić, Milica
contents 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.
format Preprint
id arxiv_https___arxiv_org_abs_2404_17366
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle An introduction to extended Gevrey regularity
Teofanov, Nenad
Tomić, Filip
Žigić, Milica
Analysis of PDEs
Functional Analysis
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.
title An introduction to extended Gevrey regularity
topic Analysis of PDEs
Functional Analysis
url https://arxiv.org/abs/2404.17366