{"title":"特殊的大厅数字","authors":"Zheng Guo, Yong Hu, Cai Heng Li","doi":"arxiv-2408.03184","DOIUrl":null,"url":null,"abstract":"A positive integer $m$ is called a Hall number if any finite group of order\nprecisely divisible by $m$ has a Hall subgroup of order $m$. We prove that,\nexcept for the obvious examples, the three integers $12$, $24$ and $60$ are the\nonly Hall numbers, solving a problem proposed by Jiping Zhang.","PeriodicalId":501037,"journal":{"name":"arXiv - MATH - Group Theory","volume":"86 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The exceptional Hall numbers\",\"authors\":\"Zheng Guo, Yong Hu, Cai Heng Li\",\"doi\":\"arxiv-2408.03184\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A positive integer $m$ is called a Hall number if any finite group of order\\nprecisely divisible by $m$ has a Hall subgroup of order $m$. We prove that,\\nexcept for the obvious examples, the three integers $12$, $24$ and $60$ are the\\nonly Hall numbers, solving a problem proposed by Jiping Zhang.\",\"PeriodicalId\":501037,\"journal\":{\"name\":\"arXiv - MATH - Group Theory\",\"volume\":\"86 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-08-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - MATH - Group Theory\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2408.03184\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - MATH - Group Theory","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2408.03184","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A positive integer $m$ is called a Hall number if any finite group of order
precisely divisible by $m$ has a Hall subgroup of order $m$. We prove that,
except for the obvious examples, the three integers $12$, $24$ and $60$ are the
only Hall numbers, solving a problem proposed by Jiping Zhang.