3 papers
math.AG2008
A geometrical approach to Gordan--Noether's and Franchetta's contributions to a question posed by Hesse
Alice Garbagnati, Flavia Repetto
Hesse claimed that an irreducible projective hypersurface in $\PP^n$ defined by an equation with vanishing hessian determinant is necessarily a cone. Gordan and Noether proved that…
math.AG2007
A connectedness theorem for products of weighted projective spaces
Lucian Badescu, Flavia Repetto
We prove a connectedness result for products of weighted projective spaces.
math.AG2007
A Barth-Lefschetz theorem for submanifolds of a product of projective spaces
Lucian Badescu, Flavia Repetto
Let be a complex submanifold of dimension of () and denote by $α\colon\Pic(\mathbb P^m\times\mathbb P^n)\to \Pic(X)$ the restr…