On a characterization of an abelian variety in the classification theory of algebraic varieties
On codimension-two subvarieties of hypersurfaces.
On Projective Varieties of Codimension 2.
On second fundamental forms of projective varieties.
On special projections of varieties: Epitome to a theorem of Beniamino Segre.
On the class of some projective varieties.
Some inequalities between the class and the degree of a smooth complex projective manifold are given. Application to the case of low sectional genus are supplied.
On the Defining Equations of Points in General Position in Pn.
On the existence of components of the Noether-Lefschetz Locus with given codiemsnion.
On the Hilbert scheme of Palatini threefolds.
On the Minimal Models of Complex Manifolds.
On the Noether-Lefschetz Theorem and Some Remarks on Codimension-two Cycles.
On the structure of linked 3-folds.
The structure of 3-folds in P6 which are generally linked via a complete intersection (f1,f2,f3) to 3-folds in P6 of degree d ≤ 5 is determined. We also give three new examples of smooth 3-folds in P6 of degree 11 and genus 9. These examples are obtained via liaison. The first two are 3-folds linked via a complete intersection (2,3,3) to 3-folds in P6 of degree 7: (i) the hyperquadric fibration over P1 and (ii) the scroll over P2. The third example is Pfaffian linked to a 3-dimensional quadric in...