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(∞,C)-isometric operators
- Title
- (∞,C)-isometric operators
- Authors
- Chō M.; Ko E.; Lee J.E.
- Ewha Authors
- 고응일
- SCOPUS Author ID
- 고응일
- Issue Date
- 2017
- Journal Title
- Operators and Matrices
- ISSN
- 1846-3886
- Citation
- Operators and Matrices vol. 11, no. 3, pp. 793 - 806
- Keywords
- (∞,C)-isometric operator; M-isometric operator; Quasinilpotent operator
- Publisher
- Element D.O.O.
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- In this paper we study properties of (∞,C)-isometric operators. In particular, we prove that if T is an (∞,C)-isometry and Q is a quasinilpotent operator, then T + Q is an (∞,C)-isometry under suitable conditions. Moreover, we show that the class of (∞,C)-isometric operators is norm closed. Finally, we investigate properties of products and tensor products of (∞,C)-isometric operators. © 2017, Element D.O.O. All rights reserved.
- DOI
- 10.7153/oam-11-56
- Appears in Collections:
- 자연과학대학 > 수학전공 > Journal papers
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