Advanced Topics in Computational Number Theory

  • Henri Cohen

Part of the Graduate Texts in Mathematics book series (GTM, volume 193)

Table of contents

  1. Front Matter
    Pages i-xv
  2. Henri Cohen
    Pages 49-132
  3. Henri Cohen
    Pages 163-222
  4. Henri Cohen
    Pages 347-387
  5. Henri Cohen
    Pages 389-428
  6. Henri Cohen
    Pages 429-473
  7. Henri Cohen
    Pages 475-521
  8. Henri Cohen
    Pages 523-531
  9. Henri Cohen
    Pages 533-548
  10. Back Matter
    Pages 549-581

About this book


The computation of invariants of algebraic number fields such as integral bases, discriminants, prime decompositions, ideal class groups, and unit groups is important both for its own sake and for its numerous applications, for example, to the solution of Diophantine equations. The practical com­ pletion of this task (sometimes known as the Dedekind program) has been one of the major achievements of computational number theory in the past ten years, thanks to the efforts of many people. Even though some practical problems still exist, one can consider the subject as solved in a satisfactory manner, and it is now routine to ask a specialized Computer Algebra Sys­ tem such as Kant/Kash, liDIA, Magma, or Pari/GP, to perform number field computations that would have been unfeasible only ten years ago. The (very numerous) algorithms used are essentially all described in A Course in Com­ putational Algebraic Number Theory, GTM 138, first published in 1993 (third corrected printing 1996), which is referred to here as [CohO]. That text also treats other subjects such as elliptic curves, factoring, and primality testing. Itis important and natural to generalize these algorithms. Several gener­ alizations can be considered, but the most important are certainly the gen­ eralizations to global function fields (finite extensions of the field of rational functions in one variable overa finite field) and to relative extensions ofnum­ ber fields. As in [CohO], in the present book we will consider number fields only and not deal at all with function fields.


Euclidean algorithm Multiplication Prolog algorithms arithmetic boundary element method computation construction database eXist field function functional equation number theory prime number

Authors and affiliations

  • Henri Cohen
    • 1
  1. 1.Lab. Algorithmique Arithmétique ExpérimentaleUniversité de Bordeaux 1TalenceFrance

Bibliographic information

  • DOI
  • Copyright Information Springer-Verlag New York, Inc. 2000
  • Publisher Name Springer, New York, NY
  • eBook Packages Springer Book Archive
  • Print ISBN 978-1-4612-6419-4
  • Online ISBN 978-1-4419-8489-0
  • Series Print ISSN 0072-5285
  • Buy this book on publisher's site