L. Stoppino

collaborators

3 papers

math.AG2025

Locally non-trivial fibred surfaces with maximal unitary rank

Lidia Stoppino

Let $f : S \to B$ a locally non-trivial fibred surface with fibres of genus $g$ . Let $u_{f}$ be its unitary rank, i.e. the rank of the flat unitary part in the second Fujita decom…

math.AG2025

Fibred surfaces and their unitary rank

Lidia Stoppino

Let $f : S \to B$ a complex fibred surface with fibres of genus $g \geq 2$ . Let $u_{f}$ be its unitary rank, i.e., the rank of the maximal unitary summand of the Hodge bundle $f_*Ï…

math.AG2024

Positivity properties of relative complete intersections

M. A. Barja, L. Stoppino

We give conditions for $f$ -positivity of relative complete intersections in projective bundles. We also derive an instability result for the fibres.