Résumé : We associate a certain co-isometric observable colligations with contractive lifting and show that the characteristic function of lifting is complete invariant for minimal contractive lifting. A class of co-isometric observable colligations with input spaces of finite dimension is characterized. Blaschke factor based transformations of the characteristic function of lifting are studied.
Lieu : Salle 316 B bis (3ème étage) - Laboratoire de Mathématiques de Besançon (LmB)
Campus de la Bouloie, bâtiment Métrologie B
Université de Franche-Comté
16 route de Gray
25030 Besançon