On cyclic biquadratic fields related to a problem of Hasse

On cyclic biquadratic fields related to a problem of Hasse
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关于与哈塞问题有关的循环二二次域

DOI:
10.1007/bf01301930
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发表时间:
1982
期刊:
Monatshefte für Mathematik
影响因子:
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通讯作者:
T. Nakahara
T. Nakahara
中科院分区:
--
文献类型:
--
作者:
T. Nakahara

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在这篇注记中,我们将证明存在无穷多个循环双二次域K,它们的整基既不是{1,α,α2,β}也不是{1,α,β,α3),对于任何数α,βInk。下一步,我们将构造无穷多个循环双二次域K,它们的指标为1,但对于每个α,α油墨仍没有整基{1,α2,α3)。最后,我们将给出一类关于整基的Hasse问题的双二次域。
In this note we shall prove that there exist infinitely many cyclic biquadratic fieldsK whose integral bases are neither {1, α, α2, β} nor {1, α, β, α3) for any numbers α, β inK. Next, we shall construct infinitely many cyclic biquadratic fieldsK which have the index 1, but still have not the integral basis {1, α, α2, α3) for every α inK. Finally we shall give a class of biquadratic fields for a problem of Hasse concerning an integral basis.