4 citations · 13 across the 11 of their papers we have counts for
13 papers · 1 filter
On Buchsbaum bundles on quadric hypersurfaces
Edoardo Ballico, Francesco Malaspina, Paolo Valabrega +1
Let be an indecomposable rank two vector bundle on the projective space $\PP^n, n \ge 3$, over an algebraically closed field of characteristic zero. It is well known that i…
Weakly uniform rank two vector bundles on multiprojective spaces
Edoardo Ballico, Francesco Malaspina
Here we classify the weakly uniform rank two vector bundles on multiprojective spaces. Moreover we show that every rank weakly uniform vector bundle with splitting type $a_{1…
Cohomological Characterization of Vector Bundles on Grassmannians of Lines
Enrique Arrondo, Francesco Malaspina
We introduce a notion of regularity for coherent sheaves on Grassmannians of lines. We use this notion to prove some extension of Evans-Griffith criterion to characterize direct su…
Qregularity and tensor products of vector bundles on smooth quadric hypersurfaces
Edoardo Ballico, Francesco Malaspina
Let $\Q_n \subset \mathbb P^{n+1}$ be a smooth quadric hypersurface. Here we prove that the tensor product of an -Qregular sheaf on $\Q_n$ and an -Qregular vector bundle on $…
Vector Bundles on Products of Varieties with -blocks Collections
Edoardo Ballico, Francesco Malaspina
Here we consider the product of varieties with -blocks collections . We give some cohomological splitting conditions for rank 2 bundles. A cohomological characterization for vec…
A splitting criterion for vector bundles on blowing ups of the plane
Edoardo Ballico, Francesco Malaspina
Let be the blowing-up of distinct points and a vector bundle on . Here we give a cohomological criterio which is equivalent to $E \cong f_s^…