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Essential norms of weighted composition operators on Müntz spaces
Authors:Ihab Al Alam
Affiliation:Université des Sciences et Technologies de Lille, Laboratoire Paul Painlevé U.M.R., CNRS 8524, U.F.R. de Mathématiques, 59 655 Villeneuve d'Ascq Cedex, France
Abstract:
In this paper, we discuss the problem of compactness for weighted composition operators, defined on a Müntz space View the MathML source. We compute the essential norm of such operators on the Müntz spaces. As a corollary, we obtain the exact values of essential norms of composition and multiplication operators.
Keywords:  ntz spaces   Compact operators   Composition operators   Essential norm
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