On the Geometry of a Siegel Modular Threefold.
On the geometry of a special determinantal hypersurface associated to the Mumford-Horrocks vector bundle.
On the Griffiths group of the cubic sevenfold.
On the group of components of a Néron model.
On the Hodge conjecture for products of certain surfaces
On the Hodge-Tage decomposition in the imperfect residue field case.
On the Kodaira dimension of moduli spaces of abelian surfaces
On the Kodaira Dimension of the Moduli Space of Abelian Varieties.
On the main cojecture of Iwasawa theory for imaginary quadratic fields.
On the moduli of curves with theta-characteristics
On the Néron models of abelian surfaces with quaternionic multiplication.
On the Newton stratification
On the Normal Bundle to Abelian Surfaces Embedded in ...4 ( C ) .
On the not integrally closed subrings of the ring of the Thetanullwerte. II.
On the number of connected components of real abelian varieties that admit sufficiently many compley multiplications.
On the number of elliptic curves with CM cover large algebraic fields
Elliptic curves with CM unveil a new phenomenon in the theory of large algebraic fields. Rather than drawing a line between and or and they give an example where the line goes beween and and another one where the line goes between and .
On the Partial Derivatives of Thetafunctions
On the period matrix of a Riemann surface of large genus (with an Appendix by J. H. Conway and N. J. A. Sloane).
On the Periods of Abelian Integrals and a Formula of Chowla and Selberg.
On the p-rank of an abelian variety and its endomorphism algebra.
Let A be an abelian variety defined over a finite field. In this paper, we discuss the relationship between the p-rank of A, r(A), and its endomorphism algebra, End0(A). As is well known, End0(A) determines r(A) when A is an elliptic curve. We show that, under some conditions, the value of r(A) and the structure of End0(A) are related. For example, if the center of End0(A) is an abelian extension of Q, then A is ordinary if and only if End0(A) is a commutative field. Nevertheless, we give an example...