5 papers
The moduli space of bilevel-6 abelian surfaces
G. K. Sankaran, J. G. Spandaw
The moduli space of abelian surfaces with polarisation of type (1,6) and a bilevel structure has positive Kodaira dimension. By contrast, Mukai has shown that the moduli space of b…
The modularity of the Barth-Nieto quintic and its relatives
K. Hulek, J. Spandaw, B. van Geemen +1
The moduli space of (1,3)-polarized abelian surfaces with full level-2 structure is birational to a double cover of the Barth-Nieto quintic. Barth and Nieto have shown that these v…
A Noether-Lefschetz theorem for vector bundles
Jeroen G. Spandaw
In this note we use the monodromy argument to prove a Noether-Lefschetz theorem for vector bundles.
Degenerations of abelian surfaces and Hodge structures
K. Hulek, J. Spandaw
In this paper the authors consider a certain toroidal compactification of the moduli space of degenerations of (1,p)-polarized abelian surfaces with (canonical) level structure. Us…
Very ample linear systems on abelian varieties
O. Debarre, K. Hulek, J. Spandaw
Let be a polarized complex abelian variety of dimension where is a polarization of type . For genberic we prove the following: (1) If $d \ge g+…