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Difference between revisions of "Abelian number field"

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An Abelian extension of the field of rational numbers <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a110/a110030/a1100301.png" />, i.e. a Galois extension <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a110/a110030/a1100302.png" /> of <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a110/a110030/a1100303.png" /> such that the Galois group <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/a/a110/a110030/a1100304.png" /> is Abelian. See [[Class field theory|Class field theory]]; [[Extension of a field|Extension of a field]]; [[Galois group|Galois group]].
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An Abelian extension of the field of rational numbers $\mathbb{Q}$, i.e. a Galois extension $K$ of $\mathbb{Q}$ such that the Galois group $\mathrm{Gal}(K/\mathbb{Q})$ is Abelian. See [[Class field theory|Class field theory]]; [[Extension of a field|Extension of a field]]; [[Galois group|Galois group]].

Revision as of 20:58, 14 October 2014

An Abelian extension of the field of rational numbers $\mathbb{Q}$, i.e. a Galois extension $K$ of $\mathbb{Q}$ such that the Galois group $\mathrm{Gal}(K/\mathbb{Q})$ is Abelian. See Class field theory; Extension of a field; Galois group.

How to Cite This Entry:
Abelian number field. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Abelian_number_field&oldid=18788
This article was adapted from an original article by M. Hazewinkel (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article