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Infinitely many Shimura varieties in the Jacobian locus for
Paola Frediani, Alessandro Ghigi, Irene Spelta
We study families of Galois covers of curves of positive genus. It is known that under a numerical condition these families yield Shimura subvarieties generically contained in the…
math.AG2019
Totally geodesic subvarieties in the moduli space of curves
Alessandro Ghigi, Gian Pietro Pirola, Sara Torelli
In this paper we study totally geodesic subvarieties of the moduli space of principally polarized abelian varieties with respect to the Siegel metric, for…