Note on the Abelian Schemes of Level Three.
On a stratification of the moduli of K3 surfaces
In this paper we give a characterization of the height of K3 surfaces in characteristic . This enables us to calculate the cycle classes in families of K3 surfaces of the loci where the height is at least . The formulas for such loci can be seen as generalizations of the famous formula of Deuring for the number of supersingular elliptic curves in characteristic . In order to describe the tangent spaces to these loci we study the first cohomology of higher closed forms.
Reed-Muller codes and supersingular curves. I
Trace and families of algebraic curves.
On the existence of supersingular curves of given genus.
The rank-one limit of the Fourier-Mukai transform.
Andreotti-Mayer loci and the Schottky problem.
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