Roberto Fringuelli

collaborators

3 papers

math.AG2025

Hitchin fibrations are NgÃ´ fibrations

Mark Andrea de Cataldo, Roberto Fringuelli, Andres Fernandez Herrero +1

We study the geometry of the Hitchin fibration for $L$ -valued $G$ -Higgs bundles over a smooth projective curve of genus $g$ , where $G$ is a reductive group and $\mathcal{…

math.AG2024

The line bundles on the moduli stack of principal bundles on families of curves

Roberto Fringuelli, Filippo Viviani

Given a connected reductive algebraic group G, we investigate the Picard group of the moduli stack of principal G-bundles over an arbitrary family of smooth curves.

math.AG2024

Automorphisms of moduli spaces of principal bundles over a smooth curve

Roberto Fringuelli

For any almost-simple group $G$ over an algebraically closed field $k$ of characteristic zero, we describe the automorphism group of the moduli space of semistable $G$ -bundles over…