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Lower bounds for unbounded operators and semigroups

Abstract:

Let A be an unbounded operator on a Banach space X. It is sometimes useful to improve the operator A by extending it to an operator B on a larger Banach space Y with smaller spectrum. It would be preferable to do this with some estimates for the resolvent of B, and also to extend bounded operators related to A, for example a semigroup generated by A. When X is a Hilbert space, one may also want Y to be Hilbert space. Results of this type for bounded operators have been given by Arens, Read, M...

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Publication status:
Submitted
Peer review status:
Under review

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Department:
St Johns College
Role:
Author
Publisher:
Theta Foundation Publisher's website
Journal:
Journal of Operator Theory Journal website
Publication date:
2016-12-05
Pubs id:
pubs:667703
URN:
uri:624fa775-1bb5-4616-9f84-4bb774294c5f
UUID:
uuid:624fa775-1bb5-4616-9f84-4bb774294c5f
Local pid:
pubs:667703

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