{"title":"关于一些虚的三二次数域$k$与${\\rm Cl}_2(k) \\simeq (2, 4)$或 $(2, 2, 2)$","authors":"A. Azizi, M. M. Chems-Eddin, A. Zekhnini","doi":"10.14712/1213-7243.2021.008","DOIUrl":null,"url":null,"abstract":"Let $d$ be a square free integer and $L_d:=\\mathbb{Q}(\\zeta_{8},\\sqrt{d})$. In the present work we determine all the fields $L_d$ such that the $2$-class group, $\\mathrm{Cl}_2(L_d)$, of $L_d$ is of type $(2,4)$ or $(2,2,2)$.","PeriodicalId":44396,"journal":{"name":"Commentationes Mathematicae Universitatis Carolinae","volume":" ","pages":""},"PeriodicalIF":0.2000,"publicationDate":"2020-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"On some imaginary triquadratic number fields $k$ with ${\\\\rm Cl}_2(k) \\\\simeq (2, 4)$ or $(2, 2, 2)$\",\"authors\":\"A. Azizi, M. M. Chems-Eddin, A. Zekhnini\",\"doi\":\"10.14712/1213-7243.2021.008\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Let $d$ be a square free integer and $L_d:=\\\\mathbb{Q}(\\\\zeta_{8},\\\\sqrt{d})$. In the present work we determine all the fields $L_d$ such that the $2$-class group, $\\\\mathrm{Cl}_2(L_d)$, of $L_d$ is of type $(2,4)$ or $(2,2,2)$.\",\"PeriodicalId\":44396,\"journal\":{\"name\":\"Commentationes Mathematicae Universitatis Carolinae\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":0.2000,\"publicationDate\":\"2020-02-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Commentationes Mathematicae Universitatis Carolinae\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.14712/1213-7243.2021.008\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Commentationes Mathematicae Universitatis Carolinae","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14712/1213-7243.2021.008","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATHEMATICS","Score":null,"Total":0}
On some imaginary triquadratic number fields $k$ with ${\rm Cl}_2(k) \simeq (2, 4)$ or $(2, 2, 2)$
Let $d$ be a square free integer and $L_d:=\mathbb{Q}(\zeta_{8},\sqrt{d})$. In the present work we determine all the fields $L_d$ such that the $2$-class group, $\mathrm{Cl}_2(L_d)$, of $L_d$ is of type $(2,4)$ or $(2,2,2)$.