Foundations of Number Theory: The greatest common divisor of two numbers | |
Prime numbers and factorization into prime factors | |
The greatest common divisor of several numbers Number-theoretic functions Congruences | |
Quadratic residues Pell's equation | |
Brun's Theorem and Dirichlet's Theorem: Introduction | |
Some elementary inequalities of prime number theory Brun's theorem on prime pairs Dirichlet's theorem on the prime numbers in an arithmetic progression | |
Further theorems on congruences | |
Characters; $L$-series; Dirichlet's proof | |
Decomposition into Two, Three, and Four Squares: Introduction Farey fractions | |
Decomposition into two squares Decomposition into four squares | |
Introduction | |
Lagrange's theorem | |
Determination of the number of solutions Decomposition into three squares | |
Equivalence of quadratic forms | |
A necessary condition for decomposability into three squares | |
The necessary condition is sufficient | |
The Class Number of Binary Quadratic Forms: Introduction Factorable and unfactorable forms Classes of forms | |
The finiteness of the class number Primary representations by forms | |
The representation of $h(d)$ in terms of $K(d)$ Gaussian sums | |
Appendix | |
Introduction | |
Kronecker's proof | |
Schur's proof | |
Mertens' proof Reduction to fundamental discriminants | |
The determination of $K(d)$ for fundamental discriminants | |
Final formulas for the class number Appendix | |
Exercises: Exercises for part one Exercises for part two Exercises for part three | |
Index of conventions | |
Index of definitions | |
Index | |
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