Vincenzo Di Gennaro

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math.AG2012★ 2 cited

Noether-Lefschetz Theory with base locus

Vincenzo Di Gennaro, Davide Franco

Let $Z$ be a closed subscheme of a smooth complex projective variety $Y\subseteq \Ps^N$, with $dim Y = 2 r + 1 \geq 3$ . We describe the intermediate Néron-Severi group (i.e. the image…

math.AG2010

A Griffiths' Theorem for varieties with isolated singularities

Vincenzo Di Gennaro, Davide Franco, Giambattista Marini

By the fundamental work of Griffiths one knows that, under suitable assumption, homological and algebraic equivalence do not coincide for a general hypersurface section of a smooth…