Essential Norms of Composition Operators Between Hardy Spaces of the Unit Disc

Citation:

Luo LUO,Kai LI.Essential Norms of Composition Operators Between Hardy Spaces of the Unit Disc[J].Chinese Annals of Mathematics B,2011,32(2):209~214
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Authors:

Luo LUO; Kai LI;

Foundation:

the National Natural Science Foundation of China (No. 10771201) and the Anhui Provincial Natural Science Foundation of China (No. 090416233).
Abstract: The authors express the essential norms of composition operators between Hardy spaces of the unit disc in terms of the natural Nevanlinna counting function.

Keywords:

Essential norm, Composition operators, Hardy spaces

Classification:

32A35, 47B33
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