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Results tagged with unbounded-operators
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user 12898
2
votes
Accepted
ordered exponential of unbounded operators
This is usually called the magnus expansion method and has a nice literature in numerical analysis. Kato also used this method to show the existence of solutions in the hyperbolic case.
I would say …
- 4,729
6
votes
Accepted
Does the generator of a 1-parameter group of Banach space isometries know which elements are...
If I am not mistaken, then this is connected to the notion of analytic vectors and related object.
If I understand your question correctly, it is answered in this paper of Chernoff.
Further, for gro …
- 4,729
6
votes
Accepted
Unbounded version of continuous functional calculus
You find the precise abstract statment in the Internet Seminar lecture notes of Markus Haase, especially in Chapter 4.
See
https://www.math.uni-kiel.de/isem21/en/course/phase1
By the way, the answer …
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