Subextensions of an abelian Galois extension

Every subgroup of an abelian group is normal. Hence every intermediate field of a finite abelian Galois extension is itself Galois over the base field.

Table of contents 133 2
- Cyclic Galois extension of the rational numbers of every finite degree Subextensions of an abelian Galois extension 39
- Finite extensions of the fixed field of a finite-order automorphism of an algebraically closed field Subextensions of an abelian Galois extension 69

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Galois correspondence
Galois theory
Algebra
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