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On the degree of repeated radical extensions
Canadian Mathematical Bulletin ( IF 0.6 ) Pub Date : 2020-11-23 , DOI: 10.4153/s0008439520000909 Fernando Szechtman
中文翻译:
关于重复部首扩展的程度
更新日期:2020-11-23
Canadian Mathematical Bulletin ( IF 0.6 ) Pub Date : 2020-11-23 , DOI: 10.4153/s0008439520000909 Fernando Szechtman
We answer a question posed by Mordell in 1953, in the case of repeated radical extensions, and find necessary and sufficient conditions for $[F[\sqrt [m_1]{N_1},\dots ,\sqrt [m_\ell ]{N_\ell }]:F]=m_1\cdots m_\ell $ , where F is an arbitrary field of characteristic not dividing any $m_i$ .
中文翻译:
关于重复部首扩展的程度
我们回答了 Mordell 在 1953 年提出的一个问题,在重复部首扩展的情况下,找到了 $[F[\sqrt [m_1]{N_1},\dots,\sqrt [m_\ell]{N_ \ell }]:F]=m_1\cdots m_\ell $ ,其中F是不划分任何 $m_i$ 的任意特征域。