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\centerline{\large \bf The unirationality of $M_{14}$. }

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\centerline{Alessandro Verra} \centerline{\it Universit\`a di Roma III }


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In the series of moduli spaces $M_g$ of genus $g$ curves which can have
Kodaira dimension $- \infty$ the following is known: \par \noindent
$M_g$ is unirational if $g \leq 12$, ($g \leq 10$ Severi, $g = 11$ Mukai and
Mori $g = 12$ Sernesi). Moreover Ran and Chang showed that $M_{13}$, $M_{15}$
are uniruled. The unirationality of $M_{14}$ is shown proving the 
umirationality
of the moduli space $\tilde M_{14}$ of pairs $(C,\gamma)$, where $C$ has
genus $14$ and $\gamma$ is a $g^1_8$ on it.

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