In this paper we study the action of a bounded linear operator over different kinds of sequences of a Banach space. Our work is mainly devoted to minimal and Mbasic sequences. PLANS and GARC~A CASTELL~N have characterized the boundedneas of a linear operator T by requiring the minimality of any seq
Operator Theory in the Hardy Space over the Bidisk, III
β Scribed by Rongwei Yang
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 202 KB
- Volume
- 186
- Category
- Article
- ISSN
- 0022-1236
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β¦ Synopsis
This paper is a continuation of an effort to build an organized operator theory in H 2 (D 2 ). It studies self-commutators for certain operator pairs and defines some numerical invariants for submodules. The fringe operator, which captures much of the information of the pairs, is defined in the last section and is used to establish an equality which connects the numerical invariants to traces of the self-commutators.
π SIMILAR VOLUMES
In this note we study perturbations of a J-nonnegative operator A in a KREIN space which are such that the difference of the resolvents of A and of the perturbed operator B is of rank one. Here B is also supposed to be J-selfadjoint. With the pair A, B we associate a one-parameter family {Br),,eR of