Sur le morphisme de Barth

Joseph Le Potier, Alexander Tikhomirov

Let $\mathrm{F}$ be a rank-2 semi-stable sheaf on the projective plane, with Chern classes $c_1=0,c_2=n$. The curve ${\beta }_{\mathrm{F}}$ of jumping lines of $\mathrm{F}$, in the dual projecti…