{"title":"c ^1 -范数的调和近似","authors":"P. V. Paramonov","doi":"10.1070/SM1992V071N01ABEH002129","DOIUrl":null,"url":null,"abstract":"A criterion is established for the possibility of approximation by harmonic functions and, in particular, by harmonic polynomials in the -norm on compact subsets of . This criterion, which is in terms of harmonic -capacity in , yields a natural analog to the theorem of Vitushkin on rational approximation in terms of analytic capacity.","PeriodicalId":208776,"journal":{"name":"Mathematics of The Ussr-sbornik","volume":"71 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1992-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"52","resultStr":"{\"title\":\"ON HARMONIC APPROXIMATION IN THE $ C^1$-NORM\",\"authors\":\"P. V. Paramonov\",\"doi\":\"10.1070/SM1992V071N01ABEH002129\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A criterion is established for the possibility of approximation by harmonic functions and, in particular, by harmonic polynomials in the -norm on compact subsets of . This criterion, which is in terms of harmonic -capacity in , yields a natural analog to the theorem of Vitushkin on rational approximation in terms of analytic capacity.\",\"PeriodicalId\":208776,\"journal\":{\"name\":\"Mathematics of The Ussr-sbornik\",\"volume\":\"71 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1992-02-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"52\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Mathematics of The Ussr-sbornik\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1070/SM1992V071N01ABEH002129\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mathematics of The Ussr-sbornik","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1070/SM1992V071N01ABEH002129","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A criterion is established for the possibility of approximation by harmonic functions and, in particular, by harmonic polynomials in the -norm on compact subsets of . This criterion, which is in terms of harmonic -capacity in , yields a natural analog to the theorem of Vitushkin on rational approximation in terms of analytic capacity.