{"title":"关于Hausdorff维数小值的bourgin - kontorovich定理的强化","authors":"I. D. Kan","doi":"10.1134/S0016266322010051","DOIUrl":null,"url":null,"abstract":"<p> Let <span>\\(\\mathfrak{D}_\\mathbf{A}(N)\\)</span> be the set of all integers not exceeding <span>\\(N\\)</span> and equal to irreducible denominators of positive rational numbers with finite continued fraction expansions in which all partial quotients belong to a finite number alphabet <span>\\(\\mathbf{A}\\)</span>. A new lower bound for the cardinality <span>\\(|\\mathfrak{D}_\\mathbf{A}(N)|\\)</span> is obtained, whose nontrivial part improves that known previously by up to 28%. </p>","PeriodicalId":575,"journal":{"name":"Functional Analysis and Its Applications","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Strengthening of the Bourgain–Kontorovich Theorem on Small Values of Hausdorff Dimension\",\"authors\":\"I. D. Kan\",\"doi\":\"10.1134/S0016266322010051\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p> Let <span>\\\\(\\\\mathfrak{D}_\\\\mathbf{A}(N)\\\\)</span> be the set of all integers not exceeding <span>\\\\(N\\\\)</span> and equal to irreducible denominators of positive rational numbers with finite continued fraction expansions in which all partial quotients belong to a finite number alphabet <span>\\\\(\\\\mathbf{A}\\\\)</span>. A new lower bound for the cardinality <span>\\\\(|\\\\mathfrak{D}_\\\\mathbf{A}(N)|\\\\)</span> is obtained, whose nontrivial part improves that known previously by up to 28%. </p>\",\"PeriodicalId\":575,\"journal\":{\"name\":\"Functional Analysis and Its Applications\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2022-07-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Functional Analysis and Its Applications\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0016266322010051\",\"RegionNum\":4,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Functional Analysis and Its Applications","FirstCategoryId":"100","ListUrlMain":"https://link.springer.com/article/10.1134/S0016266322010051","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS","Score":null,"Total":0}
Strengthening of the Bourgain–Kontorovich Theorem on Small Values of Hausdorff Dimension
Let \(\mathfrak{D}_\mathbf{A}(N)\) be the set of all integers not exceeding \(N\) and equal to irreducible denominators of positive rational numbers with finite continued fraction expansions in which all partial quotients belong to a finite number alphabet \(\mathbf{A}\). A new lower bound for the cardinality \(|\mathfrak{D}_\mathbf{A}(N)|\) is obtained, whose nontrivial part improves that known previously by up to 28%.
期刊介绍:
Functional Analysis and Its Applications publishes current problems of functional analysis, including representation theory, theory of abstract and functional spaces, theory of operators, spectral theory, theory of operator equations, and the theory of normed rings. The journal also covers the most important applications of functional analysis in mathematics, mechanics, and theoretical physics.