UNITARY EXTENSIONS OF TWO-PARAMETER LOCAL SEMIGROUPS OF ISOMETRIC OPERATORS AND THE KREIN EXTENSION THEOREM
A notion of two-parameter local semigroups of isometric operators in Hilbert space is discussed. It is shown that under certain conditions such a semigroup can be extended to a strongly continuous two-parameter group of unitary operators in a larger Hilbert space. As an application a simple proof of...
Furkejuvvon:
| Almmustuhtton: |
1993
|
|---|---|
| Fáttát: | |
| Liŋkkat: | http://hdl.handle.net/10872/5227 |
| Fáddágilkorat: |
Eai fáddágilkorat, Lasit vuosttaš fáddágilkora!
|
Geahča maid: UNITARY EXTENSIONS OF TWO-PARAMETER LOCAL SEMIGROUPS OF ISOMETRIC OPERATORS AND THE KREIN EXTENSION THEOREM
- Integral representation of kernels invariant with respect to local semigroups of isometries and generalization of the Krein - Schwartz theorem.
- GASTO SOCIAL Y EXTENSIÓN DE LA COBERTURA DE LA SEGURIDAD SOCIAL
- PROGRAMA ESCUELA DE CONSTRUCTORES POPULARES: Una experiencia de extensión académica dirigida a la capacitación de los sectores populares
- Capacitación en Bioética de estudiantes de medicina desde la extensión universitaria
- Desarrollo del Módulo de Gestión de Información para las actividades de extensión realizadas en el CENEAC UCV
- On dilation of local semigroups of contractions and some applications