scholarly journals Composition operators on the Lipschitz space in polydiscs

2003 ◽  
Vol 46 (1) ◽  
pp. 33 ◽  
Author(s):  
Zehua ZHOU
Keyword(s):  
Composition Operators ◽  
Lipschitz Space

Composition Operators on the Lipschitz Space of a Tree

2013 ◽  
Vol 11 (1) ◽  
pp. 97-108 ◽  
Author(s):  
Robert F. Allen ◽  
Flavia Colonna ◽  
Glenn R. Easley
Keyword(s):  
Composition Operators ◽  
Lipschitz Space

Essential norms of weighted differentiation composition operators between Zygmund type spaces and Bloch type spaces

Filomat ◽  
2017 ◽  
Vol 31 (9) ◽  
pp. 2877-2889 ◽  
Author(s):  
Amir Sanatpour ◽  
Mostafa Hassanlou
Keyword(s):  
Composition Operators ◽  
Sufficient Conditions ◽  
Essential Norm ◽  
Necessary And Sufficient Conditions ◽  
Norm Estimates ◽  
Type Spaces ◽  
Necessary And Sufficient

We study boundedness of weighted differentiation composition operators Dk?,u between Zygmund type spaces Z? and Bloch type spaces ?. We also give essential norm estimates of such operators in different cases of k ? N and 0 < ?,? < ?. Applying our essential norm estimates, we get necessary and sufficient conditions for the compactness of these operators.

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