Discriminant Equations in Diophantine Number Theory

The first comprehensive and up-to-date account of discriminant equations and their applications. For graduate students and researchers.

Jan-Hendrik Evertse (Author), Kálmán Gy?ry (Author)

9781107097612, Cambridge University Press

Hardback, published 3 November 2016

476 pages
23.6 x 15.8 x 3.5 cm, 0.86 kg

'… the book is very interesting and well written. It contains the motivational material necessary for those entering in the field of discriminant equations and succeeds to bring the reader to the forefront of research. Graduates and researchers in the field of number theory will find it a very valuable resource.' Dimitros Poulakis, Zentralblatt MATH

Discriminant equations are an important class of Diophantine equations with close ties to algebraic number theory, Diophantine approximation and Diophantine geometry. This book is the first comprehensive account of discriminant equations and their applications. It brings together many aspects, including effective results over number fields, effective results over finitely generated domains, estimates on the number of solutions, applications to algebraic integers of given discriminant, power integral bases, canonical number systems, root separation of polynomials and reduction of hyperelliptic curves. The authors' previous title, Unit Equations in Diophantine Number Theory, laid the groundwork by presenting important results that are used as tools in the present book. This material is briefly summarized in the introductory chapters along with the necessary basic algebra and algebraic number theory, making the book accessible to experts and young researchers alike.

Preface
Summary
Part I. Preliminaries: 1. Finite étale algebras over fields
2. Dedekind domains
3. Algebraic number fields
4. Tools from the theory of unit equations
Part II. Monic Polynomials and Integral Elements of Given Discriminant, Monogenic Orders: 5. Basic finiteness theorems
6. Effective results over Z
7. Algorithmic resolution of discriminant form and index form equations
8. Effective results over the S-integers of a number field
9. The number of solutions of discriminant equations
10. Effective results over finitely generated domains
11. Further applications
Part III. Binary Forms of Given Discriminant: 12. A brief overview of the basic finiteness theorems
13. Reduction theory of binary forms
14. Effective results for binary forms of given discriminant
15. Semi-effective results for binary forms of given discriminant
16. Invariant orders of binary forms
17. On the number of equivalence classes of binary forms of given discriminant
18. Further applications
Glossary of frequently used notation
References
Index.

Subject Areas: Algebraic geometry [PBMW], Number theory [PBH], Mathematics [PB]