Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In mathematics, Ribet''s theorem (earlier called the epsilon conjecture or -conjecture) is a statement in number theory concerning properties of Galois representations associated with modular forms. It was proposed by Jean-Pierre Serre and proved by Ken Ribet. The proof of epsilon conjecture was a significant step towards the proof of Fermat''s Last Theorem. As shown by... Mehr