2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63552We characterize the curves in $ P^3$ which are minimal in their biliaison class. Such curves are exactly the curves which do no admit an elementary descending biliaison. As a consequence we have that every curve in $P^3$ can be obtained from a minimal one by means of a finite sequence of ascending elementary biliaisons.9 pagesAlgebraic Geometry14H50; 14H45text