Mason, R. C. Diophantine Equations over Function Fields

# Diophantine Equations over Function Fields

## Mason, R. C.

Diophantine equations over number fields have formed one of the most important and fruitful areas of mathematics throughout civilisation. In recent years increasing interest has been aroused in the analogous area of equations over function fields. However, although considerable progress has been made by previous authors, none has attempted the central problem of providing methods for the actual solution of such equations. The latter is the purpose and achievement of this volume: algorithms are provided for the complete resolution of various families of equations, such as those of Thue, hyperelliptic and genus one type. The results are achieved by means of an original fundamental inequality, first announced by the author in 1982. Several specific examples are included as illustrations of the general method and as a testimony to its efficiency. Furthermore, bounds are obtained on the solutions which improve on those obtained previously by other means. Extending the equality to a different setting, namely that of positive characteristic, enables the various families of equations to be resolved in that circumstance. Finally, by applying the inequality in a different manner, simple bounds are determined on their solutions in rational functions of the general superelliptic equation. This book represents a self-contained account of a new approach to the subject, and one which plainly has not reached the full extent of its application. It also provides a more direct on the problems than any previous book. Little expert knowledge is required to follow the theory presented, and it will appeal to professional mathematicians, research students and the enthusiastic undergraduate.

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Book Description:

Diophantine equations over a number of fields have been a fruitful area of mathematics. Recently interest has been aroused in the analogous area of equations over functions. This volume aims to provide methods for the actual solution of such equations. Algorithms are provided for the complete resolution of various types of equation such as those of Thue, hyperelliptic and genus of one type.

Contenuti:

Preface; 1. The fundamental inequality; 2. The Thue equation; 3. The hyperelliptic equation; 4. Equations of small genus; 5. Bounds for equations of small genus; 6. Fields of arbitrary characteristics; 7. Solutions for non-zero characteristic; 8. The superelliptic equation; References.

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## 1.Diophantine Equations over Function Fields (London Mathematical Society Lecture Note Series)

Editore: Cambridge University Press (2013)
ISBN 10: 0511752490 ISBN 13: 9780511752490
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Descrizione libro Cambridge University Press, 2013. Printed Access Code. Condizione libro: New. book. Codice libro della libreria 0511752490

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