A Duality Result for Moduli Spaces of Semistable Sheaves Supported on Projective Curves

Abstract

We show that the moduli space M(r,c) of semistable sheaves on n-dimensional projective space with support of dimension one, with multiplicity r and with Euler characteristic c is isomorphic to M(r,-c).

In the second version we rewrite the proofs in the language of spectral sequences. The main results are unchanged. To appear in the Mathematical Journal of the University of Padua