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Essential norms of Volterra and Cesàro operators on Müntz spaces

, 2016
Ihab Al Alam, Georges Habib, Pascal Lefèvre, Fares Maalouf   +3 more
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The Essential Norms of Toeplitz Operators with Symbols in C+H∞ on Weighted Hardy Spaces are Independent of the Weights

Karlovych, Oleksiy, Shargorodsky, Eugene   +1 more
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Norms and Essential Norms of Differences of Weighted Composition Operators

Mediterranean Journal of Mathematics, 2022
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Essential Norms of Composition Operators

Integral Equations and Operator Theory, 2004
Recently, there has been considerable interest in studying lower and upper estimates for the essential norms of composition operators in function spaces. Sometimes, as a consequence, a necessary and sufficient condition for the composition operator to be compact on the function space can be obtained.
Gorkin, Pamela, MacCluer, Barbara D.
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On the Essential Norm Formulas for Some Operators

Complex Analysis and Operator Theory, 2023
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Essential norm of weighted composition operators

Analysis, 2018
Abstract In the present paper we characterize the compact, invertible, Fredholm and closed range weighted composition operators on Cesàro function spaces. We also make an effort to compute the essential norm of weighted composition operators.
Raj, Kuldip, Sharma, Charu
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Essentialism and Nonnaturalist Normative Supervenience

Topoi, 2017
In this essay I defend a kind of nonnaturalist normative supervenience, grounded in the essences of things. Essentialist theories, in fact, give us the tools to treat the nexus of normative supervenience as a nexus of metaphysical necessity, holding between the normative and the natural.
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The Essential Norm of a Composition Operator

The Annals of Mathematics, 1987
Let \(\Omega\subset{\mathbb{C}}^ n\) be a domain and \(\Phi: \Omega\to \Omega\) a mapping. The operator \(T: f\to f\circ \Phi\) is called a composition operator. The subject of composition operators represents a fertile arena for the interaction of operator theory, hard analysis, and geometry.
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