8 citations · 10 across the 7 of their papers we have counts for
5 papers · 1 filter
Commutator coverings of Siegel threefolds
V. Gritsenko, K. Hulek
We investigate the existence and non-existence of modular forms of low weight with a character with respect to the paramodular group and discuss the resulting geometric conse…
Rational surfaces in P^4 containing a plane curve
Fabrizio Catanese, Klaus Hulek
The families of smooth rational surfaces in $\PP^4$ have been classified in degree . All known rational surfaces in $\PP^4$ can be represented as blow-ups of the plane $\PP…
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…
The Fundamental Group of Some Siegel Modular Threefolds
K. Hulek, G. K. Sankaran
Let A be the moduli space of (1,p)-polarised abelian surfaces with a level structure, for p an odd prime. Let X be a desingularisation of any algebraic compactification of A. Then…
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+…