An Invitation To Algebraic Numbers And Algebraic Functions

1st Edition

Franz Halter-Koch

Chapman and Hall/CRC
May 13, 2020 Forthcoming
Textbook - 568 Pages - 3 B/W Illustrations
ISBN 9781138583610 - CAT# K376897

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The author offers a thorough presentation of the classical theory of algebraic numbers and algebraic functions which both in its conception and in many details differs from the current literature on the subject. The basic features are: Field-theoretic preliminaries and a detailed presentation of Dedekind’s ideal theory including non-principal orders and various types of class groups; the classical theory of algebraic number fields with a focus on quadratic, cubic and cyclotomic fields; basics of the analytic theory including the prime ideal theorem, density results and the determination of the arithmetic by the class group; a thorough presentation of valuation theory including the theory of differents, discriminants, and higher ramification. The theory of function fields is based on the ideal and valuation theory developed before; it presents the Riemann-Roch theorem on the basis of Weil differentials and highlights in detail the connection with classical differentials. The theory of congruence zeta functions and a proof of the Hasse -Weil theorem represent the culminating point of the volume.

The volume is accessible with a basic knowledge in algebra and elementary number theory. It empowers the reader to follow the advanced number-theoretic literature, and it is a solid basis for the study of the forthcoming volume on the foundations and main results of class field theory.

Key features:

  • A thorough presentation of the theory of Algebraic Numbers and Algebraic Functions on an ideal- and valuation-theoretic basis.
  • Several of the topics both in the number field and in the function field case were not presented before in this context.
  • Despite the wealth of presented advanced topics the text is easily readable.


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