Compactified universal jacobian and the double ramification cycle

Bashar Dudin (1)

1 CMUC - Center for Mathematics [Coimbra]

Using the compactified universal jacobian over the moduli space of stable marked curves, we give an expression in terms of natural classes of the zero section of the compactified universal jacobian in the (rational) Chow ring. After extending variants of the Abel-Jacobi map to a locus containing curves of treelike type we give a formula for the pullback of the said zero section along these extensions.

Domaines: Géométrie algébrique [math.AG]

Bashar Dudin. Compactified universal jacobian and the double ramification cycle. 2015. ⟨hal-01150627⟩