http://books.google.co.kr/books?id=AaqchQaKX-oC&printsec=frontcover&dq=absolute%2Bperiods&source=bl&ots=a9kl55F0By&sig=lRD3yB9R4C-MkTsEGofO8or5B5Q&hl=ko&ei=VZlbTOD8D5DQcZTykYYC&sa=X&oi=book_result&ct=result&resnum=4&ved=0CEQQ6AEwAw#v=onepage&q&f=false
62p
example 1.3
65p Fermat curve
73~74p theorem 2.6. Chowla-Selberg formula