PageHeader : Funkcialaj Ekvacioj, 44 (2001) 377-389 Title : Differential Equations for Modular Forms of Level Three AuthorInfo : By AuthorInfo : Yousuke OHYAMA AuthorInfo : (Osaka University, Japan) section : 1. Introduction section : 2. Theta functions and the Hesse pencil section : 3. The Picard-Fuchs equation section : 4. The Space of initial values section : References