Recently I tried to learn class field theory, but I find it is difficultydifficult. I have read the book "Algebraic Number Theory" by J. W. S. Cassels and A. Frohlich. In the book, the approach to class field theory is cohomology of groups. Although I have learndlearned cohomology of groups, I find that those theorems in the book are complicated and can not form a system. I'm wondering what are people's opinions of the book above, can you give me some suggestions on learnninglearning class field theory, and could you recommend some good books on class field theory?
The tag (class-field-theory) seems to be suitable here. (The question has been bumped anyway - by a new answer which is now deleted.)
Martin Sleziak
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