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math.CV2023
Sampling and interpolation for analytic selfmappings of the disc
Nacho Monreal Galan, Michael Papadimitrakis
Two different problems are considered here. First, a characterization of sampling sequences for the class of analytic functions from the disc into itself is given. Second, a versio…
math.CV2011
(Weak) compactness of Hankel operators on BMOA
Michael Papadimitrakis
We prove that the notions of compactness and weak compactness for a Hankel operator on BMOA are identical.
math.CV2010
The essential norm of a composition operator on the minimal Mobius invariant space
Themis Mitsis, Michael Papadimitrakis
We derive a formula for the essential norm of a composition operator on the minimal Mobius invariant space of analytic functions. As an application, we show that the essential norm…