{"title":"加权空间L^{1}(\\rho)中的DIRICHLET边值问题","authors":"V. G. Petrosyan","doi":"10.46991/pysu:a/2017.51.3.250","DOIUrl":null,"url":null,"abstract":"The Dirichlet boundary value problem in the weighted spaces $L^{1}(\\rho)$ on the unit circle $T=\\{z: |z|=1\\}$ is investigated, where $\\rho(t)={|t-t_{k}|}^{\\alpha_{k}}$,~~$k=1,\\dots,m$, \\lb $t_{k}\\in T$ and $\\alpha_{k}$ are arbitrary real numbers. The problem is to determine a function $\\Phi(z)$ analytic in unit disc such that: $ \\lim_{r\\rightarrow 1-0}\\|Re\\Phi(rt)-f(t)\\|_{L^{1}(\\rho_{r})}=0, $ where $f\\in L^{1}(\\rho)$. In the paper necessary and sufficient conditions for solvability of the problem are given and the general solution is written in the explicit form.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"24 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"DIRICHLET BOUNDARY VALUE PROBLEM IN THE WEIGHTED SPACES $L^{1}(\\\\rho)$\",\"authors\":\"V. G. Petrosyan\",\"doi\":\"10.46991/pysu:a/2017.51.3.250\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The Dirichlet boundary value problem in the weighted spaces $L^{1}(\\\\rho)$ on the unit circle $T=\\\\{z: |z|=1\\\\}$ is investigated, where $\\\\rho(t)={|t-t_{k}|}^{\\\\alpha_{k}}$,~~$k=1,\\\\dots,m$, \\\\lb $t_{k}\\\\in T$ and $\\\\alpha_{k}$ are arbitrary real numbers. The problem is to determine a function $\\\\Phi(z)$ analytic in unit disc such that: $ \\\\lim_{r\\\\rightarrow 1-0}\\\\|Re\\\\Phi(rt)-f(t)\\\\|_{L^{1}(\\\\rho_{r})}=0, $ where $f\\\\in L^{1}(\\\\rho)$. In the paper necessary and sufficient conditions for solvability of the problem are given and the general solution is written in the explicit form.\",\"PeriodicalId\":21146,\"journal\":{\"name\":\"Proceedings of the YSU A: Physical and Mathematical Sciences\",\"volume\":\"24 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-12-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the YSU A: Physical and Mathematical Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.46991/pysu:a/2017.51.3.250\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the YSU A: Physical and Mathematical Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.46991/pysu:a/2017.51.3.250","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
DIRICHLET BOUNDARY VALUE PROBLEM IN THE WEIGHTED SPACES $L^{1}(\rho)$
The Dirichlet boundary value problem in the weighted spaces $L^{1}(\rho)$ on the unit circle $T=\{z: |z|=1\}$ is investigated, where $\rho(t)={|t-t_{k}|}^{\alpha_{k}}$,~~$k=1,\dots,m$, \lb $t_{k}\in T$ and $\alpha_{k}$ are arbitrary real numbers. The problem is to determine a function $\Phi(z)$ analytic in unit disc such that: $ \lim_{r\rightarrow 1-0}\|Re\Phi(rt)-f(t)\|_{L^{1}(\rho_{r})}=0, $ where $f\in L^{1}(\rho)$. In the paper necessary and sufficient conditions for solvability of the problem are given and the general solution is written in the explicit form.