A. Lanteri

activity

20032008

collaborators

Showing 2007Show all

3 papers · 1 filter

math.AG2007

Ample subvarieties and rationally connected fibrations

Mauro C. Beltrametti, Tommaso de Fernex, Antonio Lanteri

Under some positivity assumptions, extension properties of rationally connected fibrations from a submanifold to its ambient variety are studied. Given a family of rational curves…

math.AG2007

Higher Order Bad Loci

Gian Mario Besana, Sandra Di Rocco, Antonio Lanteri

Zero-schemes on smooth complex projective varieties, forcing all elements of ample and free linear systems to be reducible are studied. Relationships among the minimal length of su…

math.AP2007

Discriminant loci of ample and spanned line bundles

Antonio Lanteri, Roberto Munoz

Let $(X, L, V)$ be a triplet where $X$ is an irreducible smooth complex projective variety, $L$ is an ample and spanned line bundle on $X$ and $V \subseteq H^{0} (X, L)$ spans $L$ . The di…