On Grothendieck's generalized Hodge conjecture for a family of threefolds with trivial canonical bundle.
On Hodge structures and non-representability of Chow groups
On homology classes represented by real algebraic varieties
On hypersurface quotient singularities of dimension 4.
On hypersurfaces in with fat points in general position.
On improper isolated intersection in complex analytic geometry
On intersection multiplicities in case of defect one
On -very ampleness of tensor products of ample line bundles on abelian surfaces
On K1 of curves over global fields.
On Kodaira energy and adjoint reduction of polarized threefolds.
On large Picard groups and the Hasse Principle for curves and K3 surfaces
On limiting rational curves.
On Linearly Normal Space Curves.
On linearly normal strange curves
Here we prove a numerical bound implying that, except for smooth plane conics in characteristic 2, no complete linear system maps birationally a smooth curve into a projective space with a strange curve as image.
On Manifolds that Cannot be Ample Divisors.
On Moduli of Algebraic Varieties. I.
On moduli of algebraic varieties II
On monomial relations between p-adic periods.
On Noether and strict stability, Hilbert exponent, and relative Nullstellensatz
Conditions characterizing the membership of the ideal of a subvariety arising from (effective) divisors in a product complex space Y × X are given. For the algebra of relative regular functions on an algebraic variety V, the strict stability is proved, in the case where Y is a normal space, and the Noether stability is established under a weakened condition. As a consequence (for both general and complete intersections) a global Nullstellensatz is derived for divisors in , respectively, . Also...
On non-holonomic irreducible D-modules.