V. Gennaro

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math.AG2005

A speciality theorem for curves in $P^{5}$

Vincenzo Di Gennaro, Davide Franco

Let $C \subset P^{r}$ be an integral projective curve. One defines the speciality index $e (C)$ of $C$ as the maximal integer $t$ such that $h^{0} (C, ω_{C} (- t)) > 0$ , where $ω_{C}$ denote…

math.AG2004

Canonical map of low codimensional subvarieties

Valentina Beorchia, Ciro Ciliberto, Vincenzo Di Gennaro

Fix integers $a \geq 1$ , $b$ and $c$ . We prove that for certain projective varieties $V \subset P^{r}$ (e.g. certain possibly singular complete intersections), there are only fi…

A speciality theorem for curves in P5

Canonical map of low codimensional subvarieties

A speciality theorem for curves in $P^{5}$