Class Field Theory: From Theory to Practice / Edition 1

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Overview

Global class field theory is a major achievement of algebraic number theory based on the functorial properties of the reciprocity map and the existence theorem. This book explores the consequences and the practical use of these results in detailed studies and illustrations of classical subjects. In the corrected second printing 2005, the author improves many details all through the book.

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Editorial Reviews

From the Publisher

From the reviews:

"The author writes in the preface that the aim of this book is ‘to help in the practical use and understanding of the principles of global class field theory for number fields, without any attempt to give proofs of the foundations …’ . He succeeded in his task admirably. The book brings a huge amount of information on … class field theory, illustrated with many well-chosen examples. … should be an obligatory reading for everybody interested in the modern development of algebraic number theory." (Wladyslaw Narkiewicz, Zentralblatt MATH, Vol. 1019, 2003)

"Global class field theory is a major achievement of algebraic number theory, based on the functorial properties of the reciprocity map and the existence theorem. The author works out the consequences and the practical use of these results by giving detailed studies and illustrations of classical subjects … . This book … gives much material in an elementary way, and is suitable for students, researchers and all who are fascinated by this theory." (L’Enseignement Mathematique, Vol. 49 (1-2), 2003)

"Each subject is treated very clearly from the theoretical side and explained by examples. The richness in examples is among the most attractive features of this book. … The book concludes with a very ample and well-organized bibliography. The writing is very clear and precise throughout. … This book gives an encompassing theoretical picture of large parts of class field theory. It is of particular interest to everybody interested … in this domain. … it is also a very enjoyable book." (Cornelius Greither, Mathematical Reviews, 2003 j)

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Product Details

  • ISBN-13: 9783642079085
  • Publisher: Springer Berlin Heidelberg
  • Publication date: 12/9/2010
  • Series: Springer Monographs in Mathematics Series
  • Edition description: Softcover reprint of hardcover 1st ed. 2003
  • Edition number: 1
  • Pages: 491
  • Product dimensions: 1.03 (w) x 9.21 (h) x 6.14 (d)

Table of Contents

Preface Introduction to Global Class Field Theory Chapter I: Basic Tools and Notations 1) Places of a number field 2) Embeddings of a Number Field in its Completions 3) Number and Ideal Groups 4) Idele Groups - Generalized Class Groups 5) Reduced Ideles - Topological Aspects 6) Kummer Extensions Chapter II: Reciprocity Maps - Existence Theorems 1) The Local Reciprocity Map - Local Class Field Theory 2) Idele Groups in an Extension L/K 3) Global Class Field Theory: Idelic Version 4) Global Class Field Theory: Class Group Version 5) Ray Class Fields 6) The Hasse Principle - For Norms - For Powers 7) Symbols Over Number Fields - Hilbert and Regular Kernels Chapter III: Abelian Extensions with Restricted Ramification - Abelian Closure 1) Generalities on H(T)/H and its Subextensions 2) Computation of A(T) := Gal(H(T)/K) and T(T) := tor(A(T)) 3) Study of the compositum of the Zp-extensions - The p-adic Conjecture 4) Structure Theorems for the Abelian Closure of K 5) Explicit Computations in Incomplete p-Ramification 6) The Radical of the Maximal Elementary Subextension of the compositum of the Zp-extensions Chapter IV: Invariant Classes Formulas in p-ramification - Genus Theory 1) Reduction to the Case of p-Ramification 2) Injectivity of the Transfer Map: A(K,p) to A(L,p) 3) Determination of invariant classes of A(L,p) and T(L,p) - p-Rationality 4) Genus Theory with Ramification and Decomposition Chapter V: Cyclic Extensions with Prescribed Ramification 1) Study of an Example 2) Construction of a Governing Field 3) Conclusion and Perspectives Appendix: Arithmetical Interpretation of the second cohomology group of G(T,S) over Zp 1) A General Approach by Class Field Theory 2) Complete p-Ramification Without Finite Decomposition 3) The General Case - Infinitesimal Knot Groups Bibliography Index of Notations
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