O jednom vytvoření Jonquièresovy involuce pátého stupně
On 3-folds in which are scrolls
On a birational classification of bundles and reflexive sheaves on surfaces
On a characterization of an abelian variety in the classification theory of algebraic varieties
On a conjecture of Xiao.
On a covering group theorem and its applications.
On a Geometric Interpretation of Multiplicity.
On a lifting problem for principal Dedekind domains
On a question of Demailly-Peternell-Schneider
We give an affirmative answer to an open question posed by Demailly-Peternell-Schneider in 2001 and recently by Peternell. Let be a surjective morphism from a log canonical pair onto a -Gorenstein variety . If is nef, we show that is pseudo-effective.
On a Result of Riemenschneider.
On abelian automorphism group of a surface of general type.
On Affine-Ruled Irrational Surfaces.
On Almost Homogeneous Compact Complex Analytic Surfaces.
On Analytic Abelian Coverings.
On automorphisms of Enriques surfaces.
On birational monomial transformations of plane.
On blowing down projective spaces in singular varieties.
On blowing up versal discriminants
It is well-known that the versal deformations of nonsimple singularities depend on moduli. The first step in deeper understanding of this phenomenon is to determine the versal discriminant, which roughly speaking is an obstacle for analytic triviality of an unfolding or deformation along the moduli. The goal of this paper is to describe the versal discriminant of and singularities basing on the fact that the deformations of these singularities may be obtained as blowing ups of certain deformations...
On Brauer groups of real Enriques surfaces.
On Compactification of Schemes.