- Tytuł:
- On the intertwinings of regular dilations
- Autorzy:
-
Gaşpar, Dumitru
Suciu, Nicolae - Powiązania:
- https://bibliotekanauki.pl/articles/1294790.pdf
- Data publikacji:
- 1997
- Wydawca:
- Polska Akademia Nauk. Instytut Matematyczny PAN
- Tematy:
-
commuting multioperator
*-regular dilation
contractive intertwining
(semi-)subnormal pair - Opis:
- The aim of this paper is to find conditions that assure the existence of the commutant lifting theorem for commuting pairs of contractions (briefly, bicontractions) having (*-)regular dilations. It is known that in such generality, a commutant lifting theorem fails to be true. A positive answer is given for contractive intertwinings which doubly intertwine one of the components. We also show that it is possible to drop the doubly intertwining property for one of the components in some special cases, for instance for semi-subnormal bicontractions. As an application, a result regarding the existence of a unitary (isometric) dilation for three commuting contractions is obtained.
- Źródło:
-
Annales Polonici Mathematici; 1997, 66, 1; 105-121
0066-2216 - Pojawia się w:
- Annales Polonici Mathematici
- Dostawca treści:
- Biblioteka Nauki
Artykuł