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math.CV2012★ 1 cited
Composition operator on model spaces
Yurii I Lyubarskii, Eugenia Malinnikova
We study compactness property of composition operator acting from a model space generated by an inner function to the Hardy space.
math.CV2010★ 6 cited
Radial oscillation of harmonic functions in the Korenblum class
Yurii Lyubarskii, Eugenia Malinnikova
We study radial behavior of harmonic functions in the unit disk belonging to the Korenblum class. We prove that functions which admit two-sided Korenblum estimate either oscillate…