REMARKS ON THE BORDIGA SCROLLS OF DEGREE TEN
Let ?be a very ample vector bundle of rank 2 on ?with ?and ?The associated scroll ?a Bordiga scroll of degree 10, turns out to be isomorphic to the blowing-up of ?along a twisted cubic C. Then the jumping lines and conics of ?can be described in a very easy and explicit way through the geometry of C.
vector bundles on the projective plane, jumping line, jumping conic, scroll, Fano threefold.