[Math] Good undergraduate level book on Cyclotomic fields

Question

I have Lang's 2 volume set on "Cyclotomic fields", and Washington's "Introduction to Cyclotomic Fields", but I feel I need something more elementary. Maybe I need to read some more on algebraic number theory, I do not know.

So I would appreciate suggestions of books, or chapters in a book, lecture notes, etc. that would give me an introduction. I am specifically interested in connection of cyclotomic fields and Bernoulli numbers.

Thank you.

Answer 1

I would just start by looking at Marcus' Number Fields for the basic algebraic number theory. It also contains tons of exercises. If you read the first 4 chapters, you should have the necessary background for most of Washington's book. I'm not familiar with Lang.

I started studying algebraic number theory last summer by going through Marcus book.