2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149995In this paper I consider a quintic surface in $\pp^3$, general in the sense of Noether-Lefschetz theory. The vector bundles of rank 2 on this surface which are $μ$-stable with respect to the hyperplane section and have $c_1 = K$, the canonical class of the surface and fixed $c_2$, are parametrized by a moduli space. This space is known to be irreducible for large $c_2$ (work of K.G. O'Grady). I give an explicit bound, namely $c_2 \geq 16$.AMSTeX, 12 pagesAlgebraic Geometry14D20 (Primary) 14J29 (Secondary)text