Arrondo Esteban, EnriqueLanteri, AntonioNovelli, Carla2023-06-192023-06-1920130386-599110.2996/kmj/1364562725https://hdl.handle.net/20.500.14352/33337A notion of "delta-genus" for ample vector bundles g of rank two on a smooth projective threefold X is defined as a couple of integers (delta(1),delta(2)).This extends the classical definition holding for ample line bundles. Then pairs (X, epsilon) with low delta(1) and delta(2) are classified under suitable additional assumptions on epsilon.journal articlehttp://projecteuclid.org/euclid.kmj/1364562725http://projecteuclid.org/metadata only access512Ample vector bundlesGrassmannian of linesspecial varietiesDelta-genusclassificationÁlgebra1201 Álgebra