On the Adjunction Mapping.
On the adjunction mapping for surfaces of Kodaira dimension ... 0 in Char.p.
On the adjunction process over a surface in char p.
On the adjunction process over a surface in char. p II: the singular case.
On the adjunction theoretic classification of polarized varieties.
On the Albanese variety of the moduli space of polarized K3 surfaces.
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 automorphisms of surfaces of general type in positive characteristic
Here we give an explicit polynomial bound (in term of and not depending on the prime ) for the order of the automorphism group of a minimal surface of general type defined over a field of characteristic .
On the automorphisms of surfaces of general type in positive characteristic, II
Here we give an upper polynomial bound (as function of but independent on ) for the order of a -subgroup of with minimal surface of general type defined over the field with . Then we discuss the non existence of similar bounds for the dimension as -vector space of the structural sheaf of the scheme .
On the birational automorphism groups of algebraic varieties
On the boundedness of the set of ample vector bundles with fixed sectional genus
On the branches of a complex space.
On the Brill-Noether theory for K3 surfaces
Let (S, H) be a polarized K3 surface. We define Brill-Noether filtration on moduli spaces of vector bundles on S. Assume that (c 1(E), H) > 0 for a sheaf E in the moduli space. We give a formula for the expected dimension of the Brill-Noether subschemes. Following the classical theory for curves, we give a notion of Brill-Noether generic K3 surfaces. Studying correspondences between moduli spaces of coherent sheaves of different ranks on S, we prove our main theorem: polarized K3 surface which...
On the Burkhardt quartic.
On the canonical ring of algebraic varieties
On the Chern Numbers of Surfaces of General Type.
On the Chern Numbers of Surfaces of General Type.
On the Chow group of certain types of Fano threefolds
On the classification of elliptic surfaces with q=1.