Positive elements in the algebra of the quantum moment problem
โ Scribed by Palle E. T. Jorgensen; Robert T. Powers
- Publisher
- Springer
- Year
- 1991
- Tongue
- English
- Weight
- 483 KB
- Volume
- 89
- Category
- Article
- ISSN
- 1432-2064
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
For an indeterminate Stielijes moment sequence the multiplication operator \(M p(x)=x p(x)\) is positive definite and has self-adjoint extensions. Exactly one of these extensions has the same lower bound as \(M\). the so-called Friedrichs extension. The spectral measure of this extension gives a cer
In this paper, we analyze a representation of a ne nonlinear systems in the form of series of nonlinear power moments. A di erence between such a representation and the representation as the Fliess series is caused by a di erence in the structure of corresponding algebras. It leads to a di erence be