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RAMIFICATION IN KUMMER EXTENSIONS ARISING FROM ALGEBRAIC TORI

Published online by Cambridge University Press:  17 August 2017

MASAMITSU SHIMAKURA*
Affiliation:
Department of Mathematics, Tokyo University of Science, 1-3, Kagurazaka, Shinjuku, Tokyo, 162-8601, Japan email 1115704@ed.tus.ac.jp
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Abstract

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We describe the ramification in cyclic extensions arising from the Kummer theory of the Weil restriction of the multiplicative group. This generalises the classical theory of Hecke describing the ramification of Kummer extensions.

Type
Research Article
Copyright
© 2017 Australian Mathematical Publishing Association Inc. 

References

Cohen, H., Advanced Topics in Computational Number Theory, Graduate Texts in Mathematics, 193 (Springer, New York, 2000).CrossRefGoogle Scholar
Fesenko, I. B. and Vostokov, S. V., Local Fields and Their Extensions, 2nd edn, Translations of Mathematical Monographs, 121 (American Mathematical Society, Providence, RI, 2002).Google Scholar
Kida, M., ‘Descent Kummer theory via Weil restriction of multiplicative groups’, J. Number Theory 130(3) (2010), 639659.CrossRefGoogle Scholar
Komatsu, T., ‘Arithmetic of Rikuna’s generic cyclic polynomial and generalization of Kummer theory’, Manuscripta Math. 114(3) (2004), 265279.CrossRefGoogle Scholar
Ono, T., ‘Arithmetic of algebraic tori’, Ann. of Math. (2) 74 (1961), 101139.CrossRefGoogle Scholar