Un contre-exemple sur les families de courbes gauches |
| |
| Authors: | Samir AÏt-Amrane Daniel Perrin |
| |
| Institution: | 1. Departement de Mathématique , Université Paris-Sud , Bat. 425-430, Orsay Cedex, F-91405, France E-mail: saniir.ait-amrane@math.u-psud.fr;2. Departement de Mathematique , Universite Paris-Sud , Bat. 425-430, Orsay Cedex, F-91405, France E-mail: daniel.perrin@math.u-psud.fr |
| |
| Abstract: | In this paper we give an example of two composants X and X,o of the Hilbert scheme of space curves (i.e. components of subschemes with constant cohomology) satisfying the condition of semi-continuity (the cohomology of curves in X is less than the cohomology of curves in X,o) but not the property X 0?Xbar]≠Ø. |
| |
| Keywords: | Hilbert Scheme composants triads Mots-clés Schéma De Hilbert composants triades |
|
|
