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- W2972431288 abstract "We give necessary and sufficient conditions for the Kummer extension $K:=mathbb{Q}left(zeta_n,sqrt[n]{alpha}right)$ to be monogenic over $mathbb{Q}(zeta_n)$ with $sqrt[n]{alpha}$ as a generator, i.e., for $mathcal{O}_K=mathbb{Z}left[zeta_nright]left[sqrt[n]{alpha}right]$. We generalize these ideas to radical extensions of an arbitrary number field $L$ and provide necessary and sufficient conditions for $sqrt[n]{alpha}$ to generate a power $mathcal{O}_L$-basis for $mathcal{O}_{Lleft(sqrt[n]{alpha}right)}$. We also give sufficient conditions for $K$ to be non-monogenic over $mathbb{Q}$ and establish a general criterion relating ramification and relative monogeneity. Using this criterion, we find a necessary and sufficient condition for a relative cyclotomic extension of degree $phi(n)$ to have $zeta_n$ as a monogenic generator." @default.
- W2972431288 created "2019-09-19" @default.
- W2972431288 creator A5052508390 @default.
- W2972431288 date "2019-09-16" @default.
- W2972431288 modified "2023-09-27" @default.
- W2972431288 title "The Monogeneity of Kummer Extensions and Radical Extensions." @default.
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