9 citations · 15 across the 6 of their papers we have counts for
6 papers · 1 filter
On double Veronese embeddings in the Grassmannian G(1,N)
J. C. Sierra, L. Ugaglia
We classify all the embeddings of P^n in a Grassmannian of lines G(1,N) such that the composition with Plücker is given by a linear system of quadrics of P^n.
A conjecture on special linear systems of P^3
Antonio Laface, Luca Ugaglia
In this note we consider the behavior of linear systems of P^3 through fat points under a cubo-cubic Cremona transformation. This allows us to produce a class of special systems wh…
A counterexample to a conjecture on linear systems on P^3
Antonio Laface, Luca Ugaglia
In this note we give a counterexample to a conjecture proposed by Ciliberto about special linear systems of P^n through multiple base points.
On a class of special linear systems of P^3
Antonio Laface, Luca Ugaglia
In this paper we deal with linear systems of P^3 through fat points. We consider the behavior of these systems under a cubo-cubic Cremona transformation that allows us to produce a…
Special linear Systems on Toric Varieties
Antonio Laface, Luca Ugaglia
We consider linear systems on toric varieties of any dimension, with invariant base points, giving a characterization of special linear systems. We then make a new conjecture for l…
Quasi-homogeneous linear systems on with base points of multiplicity 5
Antonio Laface, Luca Ugaglia
In this paper we consider linear systems of with all but one of the base points of multiplicity 5. We give an explicit way to evaluate the dimensions of such systems…