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ON UNRAMIFIED SOLVABLE EXTENSIONS OF SMALL NUMBER FIELDS

Part of: Field extensions Algebraic number theory: global fields

Published online by Cambridge University Press:  09 November 2020

JOACHIM KÖNIG Open the ORCID record for JOACHIM KÖNIG [Opens in a new window]
JOACHIM KÖNIG*
Affiliation:
Department of Mathematics Education, Korea National University of Education, Cheongju, South Korea
*
e-mail: jkoenig@knue.ac.kr
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Abstract

We investigate unramified extensions of number fields with prescribed solvable Galois group G and certain extra conditions. In particular, we are interested in the minimal degree of a number field K, Galois over $\mathbb {Q}$ , such that K possesses an unramified G-extension. We improve the best known bounds for the degree of such number fields K for certain classes of solvable groups, in particular for nilpotent groups.

Keywords

Galois theorynilpotent groupsolvable groupunramified extension

MSC classification

Primary: 11R32: Galois theory
Secondary: 12F12: Inverse Galois theory
Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 103 , Issue 3 , June 2021 , pp. 428 - 437
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Copyright
© 2020 Australian Mathematical Publishing Association Inc.

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