Extensions and rank-2 vector bundles on irreducible nodal curves
Abstract
Description
We generalize Bertram's work on rank two vector bundles to an irreducible projective nodal curve C. We use extensions of a line bundle L by O_C and the associated `forgetful' map to study a compactification of the moduli space of semi-stable vector bundles of rank 2 and determinant L on C.
32 pages, reference [Bho04] added, a few typos corrected
32 pages, reference [Bho04] added, a few typos corrected