Silvio Greco

On the genus and Hartshorne-Rao module of projective curves

Abstract. In this paper optimal upper bounds for the genus and the dimension of the graded components of the Hartshorne-Rao module of curves in projective n-space are established. This generalizes earlier work by Hartshorne [H] and Martin-Deschamps and Perrin [MDP]. Special emphasis is put on curves in

An axiomatic approach to the second theorem of Bertini

{\bf P}^4

Seminormality and quasinormality of group rings

. The first main result is a so-called Restriction Theorem. It says that a non-degenerate curve of degree

When does a projective curve contain a planar subcurve

d \geq 4

Surfaces in P4 with extremal general hyperplane section

in

Gap orders of rational functions on plane curves with few singular points

{\bf P}^4

Postulation of Adjoint Ideals and Geometry of Projective Curves

over a field of characteristic zero has a non-degenerate general hyperplane section if and only if it does not contain a planar curve of degree

Projective curves: multisecant schemes and lifting problems☆

d-1

On normal surface singularities and a problem of enriques

(see Th. 1.3). Then, using methods of Brodmann and Nagel, bounds for the genus and Hartshorne-Rao module of curves in

Bounding Castelnuovo-Mumford regularity for varieties with good general projections

{\bf P}^n