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Journal of Operator Theory

Volume 64, Issue 2, Fall 2010  pp. 387-399.

Essential norm of operators on weighted Bergman spaces of infinite order

Authors Pablo Galindo and Mikael Lindstrom
Author institution: (1) Departamento de Analisis Matematico, Universidad de Valencia, 46.100, Burjasot, Valencia, Spain
(2) Department of Mathematical Sciences, University of Oulu, FIN-90014 Oulu, Finland

Summary:  We obtain a formula for the essential norm of any operator between weighted Bergman spaces of infinite order. Then we apply it to obtain or estimate essential norms of operators acting on Bloch type spaces and to differences of composition operators or Toeplitz operators on some weighted Bergman spaces.

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