{"title":"布洛赫空间与伯格曼空间之间的类塞萨罗算子","authors":"Yuting Guo, Pengcheng Tang, Xuejun Zhang","doi":"10.1007/s43034-023-00309-6","DOIUrl":null,"url":null,"abstract":"<div><p>Let <span>\\({\\mathbb {D}}\\)</span> be the unit disc in the complex plane. Given a positive finite Borel measure <span>\\(\\mu \\)</span> on the radius [0, 1), we denote the <i>n</i>-th moment of <span>\\(\\mu \\)</span> as <span>\\(\\mu _{n}\\)</span>, that is, <span>\\(\\mu _{n}=\\int _{[0,1)}t^{n} \\textrm{d}\\mu (t).\\)</span> The Cesàro-like operator <span>\\({\\mathcal {C}}_{\\mu ,s}\\)</span> is defined on <span>\\(H({\\mathbb {D}})\\)</span> as follows: If <span>\\(f(z)=\\sum _{n=0}^{\\infty }a_{n}z^{n} \\in H({\\mathbb {D}} )\\)</span> then <span>\\({\\mathcal {C}}_{\\mu ,s}(f)\\)</span> is defined by </p><div><div><span>$$\\begin{aligned} {\\mathcal {C}}_{\\mu ,s}(f)(z)=\\sum _{n=0}^{\\infty }\\left( \\mu _{n} \\sum _{k=0}^{n}\\frac{\\Gamma (n-k+s)}{\\Gamma (s)(n-k)!}a_{k}\\right) z^{n},\\ \\ z\\in {\\mathbb {D}}. \\end{aligned}$$</span></div></div><p>In this paper, our focus is on the action of the <span>\\(\\mathrm Ces\\grave{a}ro\\)</span>-type operator <span>\\({\\mathcal {C}}_{\\mu ,s}\\)</span> on spaces of analytic functions in <span>\\({\\mathbb {D}}\\)</span>. We characterize the boundedness (compactness) of the <span>\\(\\mathrm Ces\\grave{a}ro\\)</span>-like operator <span>\\({\\mathcal {C}}_{\\mu ,s}\\)</span>, acting between the Bloch space <span>\\({\\mathcal {B}}\\)</span> and the Bergman space <span>\\(A^{p}\\)</span>.</p></div>","PeriodicalId":48858,"journal":{"name":"Annals of Functional Analysis","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2023-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Cesàro-like operators between the Bloch space and Bergman spaces\",\"authors\":\"Yuting Guo, Pengcheng Tang, Xuejun Zhang\",\"doi\":\"10.1007/s43034-023-00309-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Let <span>\\\\({\\\\mathbb {D}}\\\\)</span> be the unit disc in the complex plane. Given a positive finite Borel measure <span>\\\\(\\\\mu \\\\)</span> on the radius [0, 1), we denote the <i>n</i>-th moment of <span>\\\\(\\\\mu \\\\)</span> as <span>\\\\(\\\\mu _{n}\\\\)</span>, that is, <span>\\\\(\\\\mu _{n}=\\\\int _{[0,1)}t^{n} \\\\textrm{d}\\\\mu (t).\\\\)</span> The Cesàro-like operator <span>\\\\({\\\\mathcal {C}}_{\\\\mu ,s}\\\\)</span> is defined on <span>\\\\(H({\\\\mathbb {D}})\\\\)</span> as follows: If <span>\\\\(f(z)=\\\\sum _{n=0}^{\\\\infty }a_{n}z^{n} \\\\in H({\\\\mathbb {D}} )\\\\)</span> then <span>\\\\({\\\\mathcal {C}}_{\\\\mu ,s}(f)\\\\)</span> is defined by </p><div><div><span>$$\\\\begin{aligned} {\\\\mathcal {C}}_{\\\\mu ,s}(f)(z)=\\\\sum _{n=0}^{\\\\infty }\\\\left( \\\\mu _{n} \\\\sum _{k=0}^{n}\\\\frac{\\\\Gamma (n-k+s)}{\\\\Gamma (s)(n-k)!}a_{k}\\\\right) z^{n},\\\\ \\\\ z\\\\in {\\\\mathbb {D}}. \\\\end{aligned}$$</span></div></div><p>In this paper, our focus is on the action of the <span>\\\\(\\\\mathrm Ces\\\\grave{a}ro\\\\)</span>-type operator <span>\\\\({\\\\mathcal {C}}_{\\\\mu ,s}\\\\)</span> on spaces of analytic functions in <span>\\\\({\\\\mathbb {D}}\\\\)</span>. We characterize the boundedness (compactness) of the <span>\\\\(\\\\mathrm Ces\\\\grave{a}ro\\\\)</span>-like operator <span>\\\\({\\\\mathcal {C}}_{\\\\mu ,s}\\\\)</span>, acting between the Bloch space <span>\\\\({\\\\mathcal {B}}\\\\)</span> and the Bergman space <span>\\\\(A^{p}\\\\)</span>.</p></div>\",\"PeriodicalId\":48858,\"journal\":{\"name\":\"Annals of Functional Analysis\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2023-12-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Annals of Functional Analysis\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s43034-023-00309-6\",\"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":"Annals of Functional Analysis","FirstCategoryId":"100","ListUrlMain":"https://link.springer.com/article/10.1007/s43034-023-00309-6","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
Cesàro-like operators between the Bloch space and Bergman spaces
Let \({\mathbb {D}}\) be the unit disc in the complex plane. Given a positive finite Borel measure \(\mu \) on the radius [0, 1), we denote the n-th moment of \(\mu \) as \(\mu _{n}\), that is, \(\mu _{n}=\int _{[0,1)}t^{n} \textrm{d}\mu (t).\) The Cesàro-like operator \({\mathcal {C}}_{\mu ,s}\) is defined on \(H({\mathbb {D}})\) as follows: If \(f(z)=\sum _{n=0}^{\infty }a_{n}z^{n} \in H({\mathbb {D}} )\) then \({\mathcal {C}}_{\mu ,s}(f)\) is defined by
In this paper, our focus is on the action of the \(\mathrm Ces\grave{a}ro\)-type operator \({\mathcal {C}}_{\mu ,s}\) on spaces of analytic functions in \({\mathbb {D}}\). We characterize the boundedness (compactness) of the \(\mathrm Ces\grave{a}ro\)-like operator \({\mathcal {C}}_{\mu ,s}\), acting between the Bloch space \({\mathcal {B}}\) and the Bergman space \(A^{p}\).
期刊介绍:
Annals of Functional Analysis is published by Birkhäuser on behalf of the Tusi Mathematical Research Group.
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