{"title":"Fourth-order operators with unbounded coefficients","authors":"Federica Gregorio, Chiara Spina, C. Tacelli","doi":"10.3934/cpaa.2024020","DOIUrl":null,"url":null,"abstract":"We prove that operators of the form $A=-a(x)^2\\Delta^{2}$, with $|D a(x)|\\leq c a(x)^\\frac{1}{2}$, generate analytic semigroups in $L^p(\\mathbb{R}^N)$ for $1<p\\leq\\infty$ and in $C_b(\\mathbb{R}^N)$. In particular, we deduce generation results for the operator $A :=- (1+|x|^2)^{\\alpha} \\Delta^{2}$, $0\\leq\\alpha\\leq2$. Moreover, we characterize the maximal domain of such operators in $L^p(\\mathbb{R}^N)$ for $1<p<\\infty$.","PeriodicalId":10643,"journal":{"name":"Communications on Pure and Applied Analysis","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Communications on Pure and Applied Analysis","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.3934/cpaa.2024020","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
We prove that operators of the form $A=-a(x)^2\Delta^{2}$, with $|D a(x)|\leq c a(x)^\frac{1}{2}$, generate analytic semigroups in $L^p(\mathbb{R}^N)$ for $1
期刊介绍:
CPAA publishes original research papers of the highest quality in all the major areas of analysis and its applications, with a central theme on theoretical and numeric differential equations. Invited expository articles are also published from time to time. It is edited by a group of energetic leaders to guarantee the journal''s highest standard and closest link to the scientific communities.