Solvability and number of roots of bi-quadratic equations over p−adic fields

Unlike the real number field R, a bi-quadratic equation x4 + 1 = 0 is solvable over some p−adic number fields Qp, say p = 17, 41, · · · . Therefore, it is of independent interest to provide a solvability criterion for the bi-quadratic equation over p−adic number fields Qp. In this paper, we provide...

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Bibliographic Details
Main Authors: Saburov, Mansoor, Ahmad, Mohd Ali Khameini
Format: Article
Language:English
English
Published: Institute Mathematical Sciences, Universiti Putra Malaysia 2016
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Online Access:http://irep.iium.edu.my/51131/1/Bi-Quadratic_Eq_---_MJMS.pdf
http://irep.iium.edu.my/51131/4/51131-Solvability%20and%20number%20of%20roots%20of%20bi-quadratic%20equations%20over%20p-adic%20fields_SCOPUS.pdf
http://irep.iium.edu.my/51131/
http://einspem.upm.edu.my/journal/fullpaper/vol10sfeb/No2.pdf
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Institution: Universiti Islam Antarabangsa Malaysia
Language: English
English
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Summary:Unlike the real number field R, a bi-quadratic equation x4 + 1 = 0 is solvable over some p−adic number fields Qp, say p = 17, 41, · · · . Therefore, it is of independent interest to provide a solvability criterion for the bi-quadratic equation over p−adic number fields Qp. In this paper, we provide solvability criteria for the bi-quadratic equation x4 + ax2 = b over domains Z ∗ p, Zp \ Z ∗ p, Qp \ Zp, Qp, where p > 2. Moreover, we also provide the number of roots of the bi-quadratic equation over the mentioned domains.