Table of contents : Cover Copyright page PREFACE TABLE OF CONTENTS PART ONE: FOUNDATIONS OF NUMBER THEORY CHAPTER I CHAPTER II CHAPTER III CHAPTER IV CHAPTER V CHAPTER VI CHAPTER VII PART TWO: BRUN'S THEOREM AND DIRICHLET'S THEOREM INTRODUCTION CHAPTER I CHAPTER II CHAPTER III §2 §3 §4 PART THREE: DECOMPOSITION INTO TWO, THREE, AND FOUR SQUARES INTRODUCTION CHAPTER I CHAPTER II CHAPTER III §I §2 CHAPTER IV §2 §3 PART FOUR: CLASS NUMBER OF BINARY QUADRATIC FORMS INTRODUCTION CHAPTER I CHAPTER II CHAPTER III CHAPTER IV CHAPTER V CHAPTER VI APPENDIX INTRODUCTION §1 §2 §3 CHAPTER VII CHAPTER VIII CHAPTER IX APPENDIX: EXERCISES EXERCISES FOR PART ONE EXERCISES FOR PART TWO EXERCISES FOR PART THREE INDEX INDEX OF CONVENTIONS INDEX OF DEFINITIONS INDEX OF SYMBOLS INDEX Back Cover