{"title":"Kakutani's theorem and Ramsey sets","authors":"Andrzej Kryczka","doi":"10.1016/j.jmaa.2025.129644","DOIUrl":null,"url":null,"abstract":"<div><div>We give a short proof of Kakutani's theorem that every bounded sequence in a uniformly convex Banach space has a Cesàro summable subsequence. The proof is based on the Galvin–Prikry partition theorem on Ramsey sets.</div></div>","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"550 2","pages":"Article 129644"},"PeriodicalIF":1.2000,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Mathematical Analysis and Applications","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022247X25004251","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
We give a short proof of Kakutani's theorem that every bounded sequence in a uniformly convex Banach space has a Cesàro summable subsequence. The proof is based on the Galvin–Prikry partition theorem on Ramsey sets.
期刊介绍:
The Journal of Mathematical Analysis and Applications presents papers that treat mathematical analysis and its numerous applications. The journal emphasizes articles devoted to the mathematical treatment of questions arising in physics, chemistry, biology, and engineering, particularly those that stress analytical aspects and novel problems and their solutions.
Papers are sought which employ one or more of the following areas of classical analysis:
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