Codice QDD 16 Titolo Infinitesimal invariant and Massey products Data 2007-02-27 Autore/i Rizzi, Cecilia Link Download full text Abstract In this work, we study the Griffths infinitesimal invariant of the curve in the jacobian using secondary cohomology maps. In order to this, we construct a special differential graded algebra A, quite similar to the Kodaira-Spencer algebra and we define a natural triple Massey product on it. This allows us to give a description of the infinitesimal invariant in terms of Massey products and, by the way, to study the formality of A.