2 papers
math.AG2003
Horrocks theory and the Bernstein-Gelfand-Gelfand correspondence
I. Coanda, G. Trautmann
We construct an explicit equivalence between a category of complexes over the exterior algebra, which we call HT-complexes, and the stable category of vector bundles on the corresp…
math.AG1998
Moduli spaces of decomposable morphisms of sheaves and quotients by non-reductive groups
J. M. Drezet, G. Trautmann
We extend the methods of geometric invariant theory to actions of non--reductive groups in the case of homomorphisms between decomposable sheaves whose automorphism groups are non-…