Hoffmann, Norbert; Biswas, Indranil; Hein, Georg (Elsevier, 2008)
Let X be a geometrically irreducible smooth projective curve de ned over a eld k, and let E be a vector bundle on X. Then E is semistable if and only if there is a vector bundle F on X such that Hi(X; F E) = 0 for i = 0; ...