Modular Curves and Abelian Varieties

Includes recent contributions on modular curves and their Jacobians as well as such seminal works as Kenneth Ribet's article „Abelian varieties over the rationals and modular forms“, Elisabeth Pyle's 1995 dissertation on abelian varieties over the rationals with large endomorphism algebras, and Noam Elkies' 1993 manuscript on elliptic k-curves