Ezzahraoui H. and Mbekhta Mostafa and Zerouali E. H.: On the Cauchy dual of closed range operators. In: Acta scientiarum mathematicarum, (85) 1-2. pp. 231-248. (2019)
![[thumbnail of math_085_numb_001-002_231-248.pdf]](http://acta.bibl.u-szeged.hu/style/images/fileicons/part.png) |
Cikk, tanulmány, mű
math_085_numb_001-002_231-248.pdf Restricted to: SZTE network Download (225kB) |
Abstract
We extend in this paper the notion of Cauchy dual to operators with closed range. We then give several useful properties of Cauchy duals extending the case of left-invertible operators. As a consequence, we show that a weak concavity concept of an operator induces a corresponding weak hyponormality of its Cauchy dual.
| Item Type: | Article |
|---|---|
| Journal or Publication Title: | Acta scientiarum mathematicarum |
| Date: | 2019 |
| Volume: | 85 |
| Number: | 1-2 |
| ISSN: | 2064-8316 |
| Page Range: | pp. 231-248 |
| Official URL: | http://www.acta.hu |
| Related URLs: | http://acta.bibl.u-szeged.hu/62105/ |
| DOI: | 10.14232/actasm-018-020-2 |
| Uncontrolled Keywords: | Matematika, Operátorok |
| Additional Information: | Bibliogr.: p. 247-248. ; összefoglalás angol nyelven |
| Date Deposited: | 2019. Sep. 25. 10:45 |
| Last Modified: | 2021. Mar. 25. 15:30 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/62144 |
Actions (login required)
 |
View Item |
