{"title":"复数变量空间中有界点求值的几何条件","authors":"Stephen Deterding","doi":"10.1007/s13324-025-01132-z","DOIUrl":null,"url":null,"abstract":"<div><p>Let <i>U</i> be a bounded domain in <span>\\(\\mathbb C^d\\)</span> and let <span>\\(L^p_a(U)\\)</span>, <span>\\(1 \\le p < \\infty \\)</span>, denote the space of functions that are analytic on <span>\\(\\overline{U}\\)</span> and bounded in the <span>\\(L^p\\)</span> norm on <i>U</i>. A point <span>\\(x \\in \\overline{U}\\)</span> is said to be a bounded point evaluation for <span>\\(L^p_a(U)\\)</span> if the linear functional <span>\\(f \\rightarrow f(x)\\)</span> is bounded in <span>\\(L^p_a(U)\\)</span>. In this paper, we provide a purely geometric condition given in terms of the Sobolev <i>q</i>-capacity for a point to be a bounded point evaluation for <span>\\(L^p_a(U)\\)</span>. This extends results known only for the single variable case to several complex variables.</p></div>","PeriodicalId":48860,"journal":{"name":"Analysis and Mathematical Physics","volume":"15 5","pages":""},"PeriodicalIF":1.6000,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Geometric conditions for bounded point evaluations in spaces of several complex variables\",\"authors\":\"Stephen Deterding\",\"doi\":\"10.1007/s13324-025-01132-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Let <i>U</i> be a bounded domain in <span>\\\\(\\\\mathbb C^d\\\\)</span> and let <span>\\\\(L^p_a(U)\\\\)</span>, <span>\\\\(1 \\\\le p < \\\\infty \\\\)</span>, denote the space of functions that are analytic on <span>\\\\(\\\\overline{U}\\\\)</span> and bounded in the <span>\\\\(L^p\\\\)</span> norm on <i>U</i>. A point <span>\\\\(x \\\\in \\\\overline{U}\\\\)</span> is said to be a bounded point evaluation for <span>\\\\(L^p_a(U)\\\\)</span> if the linear functional <span>\\\\(f \\\\rightarrow f(x)\\\\)</span> is bounded in <span>\\\\(L^p_a(U)\\\\)</span>. In this paper, we provide a purely geometric condition given in terms of the Sobolev <i>q</i>-capacity for a point to be a bounded point evaluation for <span>\\\\(L^p_a(U)\\\\)</span>. This extends results known only for the single variable case to several complex variables.</p></div>\",\"PeriodicalId\":48860,\"journal\":{\"name\":\"Analysis and Mathematical Physics\",\"volume\":\"15 5\",\"pages\":\"\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2025-09-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Analysis and Mathematical Physics\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s13324-025-01132-z\",\"RegionNum\":3,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analysis and Mathematical Physics","FirstCategoryId":"100","ListUrlMain":"https://link.springer.com/article/10.1007/s13324-025-01132-z","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
Geometric conditions for bounded point evaluations in spaces of several complex variables
Let U be a bounded domain in \(\mathbb C^d\) and let \(L^p_a(U)\), \(1 \le p < \infty \), denote the space of functions that are analytic on \(\overline{U}\) and bounded in the \(L^p\) norm on U. A point \(x \in \overline{U}\) is said to be a bounded point evaluation for \(L^p_a(U)\) if the linear functional \(f \rightarrow f(x)\) is bounded in \(L^p_a(U)\). In this paper, we provide a purely geometric condition given in terms of the Sobolev q-capacity for a point to be a bounded point evaluation for \(L^p_a(U)\). This extends results known only for the single variable case to several complex variables.
期刊介绍:
Analysis and Mathematical Physics (AMP) publishes current research results as well as selected high-quality survey articles in real, complex, harmonic; and geometric analysis originating and or having applications in mathematical physics. The journal promotes dialog among specialists in these areas.