Since the publication of the first edition， several
remarkable developments have taken place. The work of Thaine， Kolyvagin， and
Rubin has produced fairly elementary proofs of Ribet's converse of Herbrand's
theorem and of the Main Conjecture. The original proofs of both of these results
used delicate techniques from algebraic geometry and were inaccessible to many
readers. Also， Sinnott discovered a beautiful proof of the vanishing of
Iwasawa's u-invariant that is much simpler than the one given in Chapter 7.
Finally， Fermat's Last Theorem was proved by Wiles， using work of Frey， Ribet，
Serre， Mazur， Langlands-Tunnell， Taylor-Wiles， and others. Although the proof，
which is based on modular forms and elliptic curves， is much different from the
cyclotomic approaches described in this book， several of the ingredients were
inspired by ideas from cyclotomic fields and Iwasawa theory.
Preface to the Second Edition
Preface to the First Edition
CHAPTER 1
Fermat's Last Theorem
CHAPTER 2
Basic Results
CHAPTER 3
Dirichlet Characters
CHAPTER 4
Dirichlet L-series and Class Number Formulas
CHAPTER 5
p-adic L-functions and Bernoulli Numbers
5.1. p-adic functions
5.2. p-adic L-functions
5.3. Congruences
Preface to the Second Edition
Preface to the First Edition
CHAPTER 1
Fermat's Last Theorem
CHAPTER 2
Basic Results
CHAPTER 3
Dirichlet Characters
CHAPTER 4
Dirichlet L-series and Class Number Formulas
CHAPTER 5
p-adic L-functions and Bernoulli Numbers
5.1. p-adic functions
5.2. p-adic L-functions
5.3. Congruences
5.4. The value at s = 1
5,5. The p-adic regulator
5.6. Applications of the class numb, r formula
……
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