| Title: | The unit group of some fields of the form $\mathbb {Q}(\sqrt {2}, \sqrt {p}, \sqrt {q}, \sqrt {-l})$ (English) | 
| Author: | El Hamam, Moha Ben Taleb | 
| Language: | English | 
| Journal: | Mathematica Bohemica | 
| ISSN: | 0862-7959 (print) | 
| ISSN: | 2464-7136 (online) | 
| Volume: | 149 | 
| Issue: | 1 | 
| Year: | 2024 | 
| Pages: | 49-55 | 
| Summary lang: | English | 
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| Category: | math | 
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| Summary: | Let $p$ and $q$ be two different prime integers such that $p\equiv q\equiv 3\pmod 8$ with $(p/q)=1$, and $l$ a positive odd square-free integer relatively prime to $p$ and $q$. In this paper we investigate the unit groups of number fields $\mathbb L=\mathbb {Q}(\sqrt {2}, \sqrt {p}, \sqrt {q}, \sqrt {-l})$. (English) | 
| Keyword: | unit group | 
| Keyword: | multiquadratic number fields | 
| Keyword: | unit index | 
| MSC: | 11R04 | 
| MSC: | 11R27 | 
| MSC: | 11R29 | 
| idZBL: | Zbl 07830543 | 
| idMR: | MR4715556 | 
| DOI: | 10.21136/MB.2023.0077-22 | 
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| Date available: | 2024-03-13T10:18:12Z | 
| Last updated: | 2024-12-13 | 
| Stable URL: | http://hdl.handle.net/10338.dmlcz/152292 | 
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| Reference: | [1] Azizi, A.: Unités de certains corps de nombres imaginaires et abéliens sur $\Bbb Q$.Ann. Sci. Math. Qué. 23 (1999), 15-21 French \99999MR99999 1721726 	. Zbl 1041.11072, MR 1721726 | 
| Reference: | [2] Azizi, 	A., Chems-Eddin, M. M., Zekhnini, A.: Note on the Hilbert 2-class field tower.Math. Bohem. 147 (2022), 513-524 \99999DOI99999 10.21136/MB.2022.0056-21 	. MR 4512171 | 
| Reference: | [3] Chems-Eddin, M. M.: Arithmetic of some real triquadratic fields: Units and 2-class groups.Available at https://arxiv.org/abs/2108.04171v1 (2021), 32 pages. | 
| Reference: | [4] Chems-Eddin, 	M. M.: Unit groups of some multiquadratic number fields and 2-class groups.Period. Math. Hung. 84 (2022), 235-249. Zbl 07551296, MR 4423478, 10.1007/s10998-021-00402-0 | 
| Reference: | [5] Chems-Eddin, M. M.: On units of some fields of the form $\Bbb{Q}(\sqrt2, \sqrt{p}, \sqrt{q}, \sqrt{-\ell})$.Math. Bohem. 148 (2023), 237-242. Zbl 7729575, MR 4585579, 10.21136/MB.2022.0128-21 | 
| Reference: | [6] Chems-Eddin, M. M., Azizi, A., Zekhnini, A.: Unit groups and Iwasawa lambda invariants of some multiquadratic number fields.Bol. Soc. Mat. Mex, III. Ser. 27 (2021), Article ID 24, 16 pages. Zbl 1468.11223, MR 4220815, 10.1007/s40590-021-00329-z | 
| Reference: | [7] Chems-Eddin, M. M., Zekhnini, A., Azizi, A.: Units and 2-class field towers of some multiquadratic number fields.Turk. J. Math. 44 (2020), 1466-1483. Zbl 1455.11140, MR 4122918, 10.3906/mat-2003-117 | 
| Reference: | [8] Chems-Eddin, M. M., Zekhnini, A., Azizi, A.: On the Hilbert 2-class field towers of some cyclotomic $\Bbb Z_2$-extensions.Available at https://arxiv.org/abs/2005.06646 (2021), 15 pages. MR 4769739 | 
| Reference: | [9] Chems-Eddin, M. M., Zekhnini, A., Azizi, A.: Unit groups of some multiquadratic number fields of degree 16.São Paulo J. Math. Sci 16 (2022), 1091-1096. Zbl 7626140, MR 4515950, 10.1007/s40863-020-00209-w | 
| Reference: | [10] Kubota, T.: Über den bizyklischen biquadratischen Zahlkörper.Nagoya Math. J. 10 (1956), 65-85 German. Zbl 0074.03001, MR 0083009, 10.1017/S0027763000000088 | 
| Reference: | [11] Wada, H.: On the class number and the unit group of certain algebraic number fields.J. Fac. Sci., Univ. Tokyo, Sect. I 13 (1966), 201-209. Zbl 0158.30103, MR 0214565 | 
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