# name
On the topological index of irregular surfaces

# metadata.dc.description.abstract[].value
We study the topological index of some irregular surfaces that we call generalized Lagrangian. We show that under certain hypotheses on the base locus of the Lagrangian system the topological index is non-negative. For the minimal surfaces of general type with $q=4$ and $p_g=5$ we prove the same statement without any hypothesis.

# metadata.dc.relation.ispartof[].value
Journal of Algebraic Geometry, 2007, vol. 16, p. 435-458

# metadata.dc.rights[].value
cc-by-nc-nd (c) University Press Inc., 2007

# metadata.dc.source[].value
Articles publicats en revistes (Matemàtiques i Informàtica)

# metadata.dc.title[].value
On the topological index of irregular surfaces