{"title":"固定循环扩展中塔特-沙法列维奇群的无界性","authors":"Yi Ouyang, Jianfeng Xie","doi":"10.1007/s00209-024-03527-3","DOIUrl":null,"url":null,"abstract":"<p>In this paper we prove two unboundedness results about the Tate–Shafarevich groups of abelian varieties in a fixed nontrivial cyclic extension <i>L</i>/<i>K</i> of global fields, firstly in the case that <i>K</i> is a number field and the abelian varieties are elliptic curves, secondly in the case that <i>K</i> is a global field, [<i>L</i> : <i>K</i>] is a 2-power and the abelian varieties are principally polarized.</p>","PeriodicalId":18278,"journal":{"name":"Mathematische Zeitschrift","volume":"48 1","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Unboundedness of Tate–Shafarevich groups in fixed cyclic extensions\",\"authors\":\"Yi Ouyang, Jianfeng Xie\",\"doi\":\"10.1007/s00209-024-03527-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In this paper we prove two unboundedness results about the Tate–Shafarevich groups of abelian varieties in a fixed nontrivial cyclic extension <i>L</i>/<i>K</i> of global fields, firstly in the case that <i>K</i> is a number field and the abelian varieties are elliptic curves, secondly in the case that <i>K</i> is a global field, [<i>L</i> : <i>K</i>] is a 2-power and the abelian varieties are principally polarized.</p>\",\"PeriodicalId\":18278,\"journal\":{\"name\":\"Mathematische Zeitschrift\",\"volume\":\"48 1\",\"pages\":\"\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2024-06-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Mathematische Zeitschrift\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://doi.org/10.1007/s00209-024-03527-3\",\"RegionNum\":3,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mathematische Zeitschrift","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1007/s00209-024-03527-3","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
Unboundedness of Tate–Shafarevich groups in fixed cyclic extensions
In this paper we prove two unboundedness results about the Tate–Shafarevich groups of abelian varieties in a fixed nontrivial cyclic extension L/K of global fields, firstly in the case that K is a number field and the abelian varieties are elliptic curves, secondly in the case that K is a global field, [L : K] is a 2-power and the abelian varieties are principally polarized.