Department of Mathematics and Informatics, University of Catania, Viale A. Doria 6, I95125 Catania, Italy
Abstract:
We characterize the curves in that are minimal in their biliaison class. Such curves are exactly the curves that do not admit an elementary descending biliaison. As a consequence we have that every curve in can be obtained from a minimal one by means of a finite sequence of ascending elementary biliaisons.