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The Absolute Galois Group of a Semi-Local Field

The Absolute Galois Group of a Semi-Local Field

Hardcover

Series: Springer Monographs in Mathematics

AlgebraGeometry

ISBN10: 3030891909
ISBN13: 9783030891909
Publisher: Springer Nature
Published: Nov 20 2021
Pages: 137
Weight: 0.88
Height: 0.44 Width: 6.14 Depth: 9.21
Language: English

This book is devoted to the structure of the absolute Galois groups of certain algebraic extensions of the field of rational numbers. Its main result, a theorem proved by the authors and Florian Pop in 2012, describes the absolute Galois group of distinguished semi-local algebraic (and other) extensions of the rational numbers as free products of the free profinite group on countably many generators and local Galois groups. This is an instance of a positive answer to the generalized inverse problem of Galois theory.

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Haran, Dan

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Algebra