Torsion points on modular curves and Galois theory

We outline the proof of a theorem of M. Baker and A. Tamagawa that gives a complete description of the torsion points on a modular curve embedded in its Jacobian using the notion of an `almost rational torsion point.'

Bibliographic Details
Main Authors: Ribet, K, Kim, M
Format: Journal article
Published: 2003
Description
Summary:We outline the proof of a theorem of M. Baker and A. Tamagawa that gives a complete description of the torsion points on a modular curve embedded in its Jacobian using the notion of an `almost rational torsion point.'