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On the Essential Norm Formulas for Some Operators.
- Source :
- Complex Analysis & Operator Theory; Mar2023, Vol. 17 Issue 2, p1-36, 36p
- Publication Year :
- 2023
-
Abstract
- We prove equivalence of the classical Adamyan-Arov-Krein theorem (Adamyan, Arov and Krein in Mat Sb 86:34–75, 1971) and Mustafayev’s recent result in (Mustafayev in Integr Equ Oper Theory 92:1–21, 2020) about essential norm of Hankel and function of model operators, respectively. We also prove a quantitative version of Bessonov’s compactness theorem for truncated Toeplitz operators. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16618254
- Volume :
- 17
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Complex Analysis & Operator Theory
- Publication Type :
- Academic Journal
- Accession number :
- 161197885
- Full Text :
- https://doi.org/10.1007/s11785-022-01324-6