Cover of Cornelius Greither: Cyclic Galois Extensions of Commutative Rings

Cornelius Greither Cyclic Galois Extensions of Commutative Rings

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Springer Berlin Heidelberg

2006

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978-3-540-47539-2

3-540-47539-7

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The structure theory of abelian extensions of commutativerings is a subjectwhere commutative algebra and algebraicnumber theory overlap. This exposition is aimed at readerswith some background in either of these two fields. Emphasisis given to the notion of a normal basis, which allows oneto view in a well-known conjecture in number theory(Leopoldt's conjecture) from a new angle. Methods toconstruct certain extensions quite explicitly are alsodescribed at length.

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