On minimal models of elliptic threefolds.
On polarized canonical Calabi-Yau threefolds.
On quasi-polarized manifolds whose sectional genus is equal to the irregularity
On reflexive sheaves with low sectional genera on threefolds.
On regular threefolds with k = 0.
On the ampleness of for a polarized threefold
Siano una varietà algebrica proiettiva complessa non singolare tridimensionale, un fibrato lineare ampio su , e un intero. Si prova che, a meno di contrarre un numero finito di -piani di , il fibrato è ampio ad eccezione di alcuni casi esplicitamente descritti. Come applicazione si dimostra l'ampiezza del divisore di ramificazione di un qualunque rivestimento di o della quadrica liscia di .
On the arithmetic of certain intersections of two quadrics.
On the Burkhardt quartic.
On the canonical ring of algebraic varieties
On the Chow group of certain types of Fano threefolds
On the classification of Hilbert Modular threefolds.
On the curvature of moduli space of special Lagrangian submanifolds
In this paper we study the curvature tensor of the Riemannian metric defined in a natural way on the moduli space of compact special Lagrangian submanifolds of a Calabi-Yau manifold. We state some curvature properties and we prove that the Ricci curvature is non negative under an assumption on the determinant of .
On the dimension of the adjoint linear system for threefolds
On the discriminant variety of a projective manifold.
On the extendability of elliptic surfaces of rank two and higher
We study threefolds having as hyperplane section a smooth surface with an elliptic fibration. We first give a general theorem about the possible embeddings of such surfaces with Picard number two. More precise results are then proved for Weierstrass fibrations, both of rank two and higher. In particular we prove that a Weierstrass fibration of rank two that is not a K3 surface is not hyperplane section of a locally complete intersection threefold and we give some conditions, for many embeddings...
On the finiteness of rational curves on quintic threefolds
On the Fundamental Group of a Unirational 3-Fold.
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 Hilbert scheme of Palatini threefolds.