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Note on class number factors and prime decompositions

Published online by Cambridge University Press:  22 January 2016

Yoshiomi Furuta*
Affiliation:
Kanazawa University
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Let K be a Galois extension of an algebraic number field k of finite degree with Galois group g, be a congruent ideal class group of K, and M be the class field over K corresponding to . Assume that M is normal over k. Then g acts on as a group of automorphisms. Donote by lg the augmentation ideal of the group ring Zg over the ring of integers Z.

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Type
Research Article
Copyright
Copyright © Editorial Board of Nagoya Mathematical Journal 1977