{"title":"再现核希尔伯特空间中的非线性展开","authors":"Javad Mashreghi, William Verreault","doi":"10.1007/s43670-023-00069-3","DOIUrl":null,"url":null,"abstract":"We introduce an expansion scheme in reproducing kernel Hilbert spaces, which as a special case covers the celebrated Blaschke unwinding series expansion for analytic functions. The expansion scheme is further generalized to cover Hardy spaces $$H^p$$ , $$1<p<\\infty $$ , viewed as Banach spaces of analytic functions with bounded evaluation functionals. In this setting a dichotomy is more transparent: depending on the multipliers used, the expansion of $$f \\in H^p$$ converges either to f in $$H^p$$ -norm or to its projection onto a model space generated by the corresponding multipliers. Some explicit instances of the general expansion scheme, which are not covered by the previously known methods, are also discussed.","PeriodicalId":74751,"journal":{"name":"Sampling theory, signal processing, and data analysis","volume":"72 4 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Nonlinear expansions in reproducing kernel Hilbert spaces\",\"authors\":\"Javad Mashreghi, William Verreault\",\"doi\":\"10.1007/s43670-023-00069-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We introduce an expansion scheme in reproducing kernel Hilbert spaces, which as a special case covers the celebrated Blaschke unwinding series expansion for analytic functions. The expansion scheme is further generalized to cover Hardy spaces $$H^p$$ , $$1<p<\\\\infty $$ , viewed as Banach spaces of analytic functions with bounded evaluation functionals. In this setting a dichotomy is more transparent: depending on the multipliers used, the expansion of $$f \\\\in H^p$$ converges either to f in $$H^p$$ -norm or to its projection onto a model space generated by the corresponding multipliers. Some explicit instances of the general expansion scheme, which are not covered by the previously known methods, are also discussed.\",\"PeriodicalId\":74751,\"journal\":{\"name\":\"Sampling theory, signal processing, and data analysis\",\"volume\":\"72 4 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-09-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Sampling theory, signal processing, and data analysis\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1007/s43670-023-00069-3\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sampling theory, signal processing, and data analysis","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/s43670-023-00069-3","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Nonlinear expansions in reproducing kernel Hilbert spaces
We introduce an expansion scheme in reproducing kernel Hilbert spaces, which as a special case covers the celebrated Blaschke unwinding series expansion for analytic functions. The expansion scheme is further generalized to cover Hardy spaces $$H^p$$ , $$1