Approximation numbers of composition operators on the Dirichlet space
نویسندگان
چکیده
منابع مشابه
Approximation numbers of composition operators on the Dirichlet space
We study the decay of approximation numbers of compact composition operators on the Dirichlet space. We give upper and lower bounds for these numbers. In particular, we improve on a result of O. El-Fallah, K. Kellay, M. Shabankhah and A. Youssfi, on the set of contact points with the unit circle of a compact symbolic composition operator acting on the Dirichlet space D. We extend their results ...
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ژورنال
عنوان ژورنال: Arkiv för Matematik
سال: 2015
ISSN: 0004-2080
DOI: 10.1007/s11512-013-0194-z