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math.AG2000
The top Chern class of the Hodge bundle on the moduli space of abelian varieties
Torsten Ekedahl, Gerard van der Geer
We give upper and lower bounds for the order of the top Chern class of the Hodge bundle on the moduli space of principally polarized abelian varieties. We also give a generalizatio…
math.AG2000
Formal Brauer groups and the moduli of abelian surfaces
G. van der Geer, T. Katsura
In this paper we consider the stratification on the moduli space of principally polarized abelian surfaces in characteristic defined by the height of the formal group associa…