The Hartshorne-Rao module of curves on rational normal scrolls

  • Roberta Di Gennaro
Keywords: Curve, Cohomology group

Abstract

We study the Hartshorne-Rao module of curves lying on a rational normal scroll S_e of invariant e ≥ 0 in P^{e+3} .


We calculate the Rao function, we characterize the aCM curves on S_e .


Finally, we give an algorithm to check if a curve is aC M or not and, in
the second case, to calculate the Rao function.

Published
2002-08-01
Section
Articoli