Petros Galanopoulos , Aristomenis G. Siskakis , Ruhan Zhao
{"title":"加权伯格曼空间之间的加权Cesàro类型算子","authors":"Petros Galanopoulos , Aristomenis G. Siskakis , Ruhan Zhao","doi":"10.1016/j.bulsci.2025.103622","DOIUrl":null,"url":null,"abstract":"<div><div>Let <span><math><mi>D</mi></math></span> be the open unit disk in the complex plane <span><math><mi>C</mi></math></span>. Let <em>μ</em> be a positive Borel measure on <span><math><mo>[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>)</mo></math></span>. If <span><math><mi>f</mi><mo>(</mo><mi>z</mi><mo>)</mo><mo>=</mo><msubsup><mrow><mo>∑</mo></mrow><mrow><mi>n</mi><mo>=</mo><mn>0</mn></mrow><mrow><mo>∞</mo></mrow></msubsup><msub><mrow><mi>a</mi></mrow><mrow><mi>n</mi></mrow></msub><msup><mrow><mi>z</mi></mrow><mrow><mi>n</mi></mrow></msup></math></span> is an analytic function in <span><math><mi>D</mi></math></span>, we consider for <span><math><mi>β</mi><mo>></mo><mn>0</mn></math></span> the following weighted Cesàro type operator<span><span><span><math><msub><mrow><mi>C</mi></mrow><mrow><mi>μ</mi><mo>,</mo><mi>β</mi></mrow></msub><mo>(</mo><mi>f</mi><mo>)</mo><mo>(</mo><mi>z</mi><mo>)</mo><mo>=</mo><munderover><mo>∑</mo><mrow><mi>n</mi><mo>=</mo><mn>0</mn></mrow><mrow><mo>∞</mo></mrow></munderover><msub><mrow><mi>μ</mi></mrow><mrow><mi>n</mi></mrow></msub><mrow><mo>(</mo><munderover><mo>∑</mo><mrow><mi>k</mi><mo>=</mo><mn>0</mn></mrow><mrow><mi>n</mi></mrow></munderover><mfrac><mrow><mi>Γ</mi><mo>(</mo><mi>n</mi><mo>−</mo><mi>k</mi><mo>+</mo><mi>β</mi><mo>)</mo></mrow><mrow><mo>(</mo><mi>n</mi><mo>−</mo><mi>k</mi><mo>)</mo><mo>!</mo><mspace></mspace><mi>Γ</mi><mo>(</mo><mi>β</mi><mo>)</mo></mrow></mfrac><msub><mrow><mi>a</mi></mrow><mrow><mi>k</mi></mrow></msub><mo>)</mo></mrow><msup><mrow><mi>z</mi></mrow><mrow><mi>n</mi></mrow></msup><mo>,</mo><mspace></mspace><mi>z</mi><mo>∈</mo><mi>D</mi><mo>,</mo></math></span></span></span> where <span><math><msub><mrow><mi>μ</mi></mrow><mrow><mi>n</mi></mrow></msub></math></span> is the <em>n</em>-th moment of <em>μ</em> given by <span><math><msub><mrow><mi>μ</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>=</mo><munder><mo>∫</mo><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>)</mo></mrow></munder><msup><mrow><mi>t</mi></mrow><mrow><mi>n</mi></mrow></msup><mspace></mspace><mi>d</mi><mi>μ</mi><mo>(</mo><mi>t</mi><mo>)</mo></math></span>. We characterize boundedness of the weighted Cesàro type operator <span><math><msub><mrow><mi>C</mi></mrow><mrow><mi>μ</mi><mo>,</mo><mi>β</mi></mrow></msub></math></span> from the weighted Bergman space <span><math><msubsup><mrow><mi>A</mi></mrow><mrow><mi>α</mi></mrow><mrow><mi>p</mi></mrow></msubsup></math></span> to <span><math><msubsup><mrow><mi>A</mi></mrow><mrow><mi>α</mi></mrow><mrow><mi>q</mi></mrow></msubsup></math></span> for <span><math><mn>1</mn><mo>≤</mo><mi>p</mi><mo>≤</mo><mi>q</mi><mo><</mo><mo>∞</mo></math></span>. Our method relies on a representation of <span><math><msub><mrow><mi>C</mi></mrow><mrow><mi>μ</mi><mo>,</mo><mi>β</mi></mrow></msub></math></span> as an integral operator with a kernel and a generalized Schur's test.</div></div>","PeriodicalId":55313,"journal":{"name":"Bulletin des Sciences Mathematiques","volume":"202 ","pages":"Article 103622"},"PeriodicalIF":1.3000,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Weighted Cesàro type operators between weighted Bergman spaces\",\"authors\":\"Petros Galanopoulos , Aristomenis G. Siskakis , Ruhan Zhao\",\"doi\":\"10.1016/j.bulsci.2025.103622\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Let <span><math><mi>D</mi></math></span> be the open unit disk in the complex plane <span><math><mi>C</mi></math></span>. Let <em>μ</em> be a positive Borel measure on <span><math><mo>[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>)</mo></math></span>. If <span><math><mi>f</mi><mo>(</mo><mi>z</mi><mo>)</mo><mo>=</mo><msubsup><mrow><mo>∑</mo></mrow><mrow><mi>n</mi><mo>=</mo><mn>0</mn></mrow><mrow><mo>∞</mo></mrow></msubsup><msub><mrow><mi>a</mi></mrow><mrow><mi>n</mi></mrow></msub><msup><mrow><mi>z</mi></mrow><mrow><mi>n</mi></mrow></msup></math></span> is an analytic function in <span><math><mi>D</mi></math></span>, we consider for <span><math><mi>β</mi><mo>></mo><mn>0</mn></math></span> the following weighted Cesàro type operator<span><span><span><math><msub><mrow><mi>C</mi></mrow><mrow><mi>μ</mi><mo>,</mo><mi>β</mi></mrow></msub><mo>(</mo><mi>f</mi><mo>)</mo><mo>(</mo><mi>z</mi><mo>)</mo><mo>=</mo><munderover><mo>∑</mo><mrow><mi>n</mi><mo>=</mo><mn>0</mn></mrow><mrow><mo>∞</mo></mrow></munderover><msub><mrow><mi>μ</mi></mrow><mrow><mi>n</mi></mrow></msub><mrow><mo>(</mo><munderover><mo>∑</mo><mrow><mi>k</mi><mo>=</mo><mn>0</mn></mrow><mrow><mi>n</mi></mrow></munderover><mfrac><mrow><mi>Γ</mi><mo>(</mo><mi>n</mi><mo>−</mo><mi>k</mi><mo>+</mo><mi>β</mi><mo>)</mo></mrow><mrow><mo>(</mo><mi>n</mi><mo>−</mo><mi>k</mi><mo>)</mo><mo>!</mo><mspace></mspace><mi>Γ</mi><mo>(</mo><mi>β</mi><mo>)</mo></mrow></mfrac><msub><mrow><mi>a</mi></mrow><mrow><mi>k</mi></mrow></msub><mo>)</mo></mrow><msup><mrow><mi>z</mi></mrow><mrow><mi>n</mi></mrow></msup><mo>,</mo><mspace></mspace><mi>z</mi><mo>∈</mo><mi>D</mi><mo>,</mo></math></span></span></span> where <span><math><msub><mrow><mi>μ</mi></mrow><mrow><mi>n</mi></mrow></msub></math></span> is the <em>n</em>-th moment of <em>μ</em> given by <span><math><msub><mrow><mi>μ</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>=</mo><munder><mo>∫</mo><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mn>1</mn><mo>)</mo></mrow></munder><msup><mrow><mi>t</mi></mrow><mrow><mi>n</mi></mrow></msup><mspace></mspace><mi>d</mi><mi>μ</mi><mo>(</mo><mi>t</mi><mo>)</mo></math></span>. We characterize boundedness of the weighted Cesàro type operator <span><math><msub><mrow><mi>C</mi></mrow><mrow><mi>μ</mi><mo>,</mo><mi>β</mi></mrow></msub></math></span> from the weighted Bergman space <span><math><msubsup><mrow><mi>A</mi></mrow><mrow><mi>α</mi></mrow><mrow><mi>p</mi></mrow></msubsup></math></span> to <span><math><msubsup><mrow><mi>A</mi></mrow><mrow><mi>α</mi></mrow><mrow><mi>q</mi></mrow></msubsup></math></span> for <span><math><mn>1</mn><mo>≤</mo><mi>p</mi><mo>≤</mo><mi>q</mi><mo><</mo><mo>∞</mo></math></span>. Our method relies on a representation of <span><math><msub><mrow><mi>C</mi></mrow><mrow><mi>μ</mi><mo>,</mo><mi>β</mi></mrow></msub></math></span> as an integral operator with a kernel and a generalized Schur's test.</div></div>\",\"PeriodicalId\":55313,\"journal\":{\"name\":\"Bulletin des Sciences Mathematiques\",\"volume\":\"202 \",\"pages\":\"Article 103622\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2025-03-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin des Sciences Mathematiques\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S000744972500048X\",\"RegionNum\":3,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATHEMATICS, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin des Sciences Mathematiques","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S000744972500048X","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATHEMATICS, APPLIED","Score":null,"Total":0}
Weighted Cesàro type operators between weighted Bergman spaces
Let be the open unit disk in the complex plane . Let μ be a positive Borel measure on . If is an analytic function in , we consider for the following weighted Cesàro type operator where is the n-th moment of μ given by . We characterize boundedness of the weighted Cesàro type operator from the weighted Bergman space to for . Our method relies on a representation of as an integral operator with a kernel and a generalized Schur's test.