Title of article :
Weighted differentiation composition operators on the Q_K(p,q) spaces and their essential norms
Author/Authors :
Hassanlou ، Mostafa Engineering Faculty of Khoy - Urmia University of Technology , Abbasi ، Ebrahim Department of Mathematics - Islamic Azad University, Mahabad Branch , Ebrahimi ، Ali Department of Mathematics - Islamic Azad University, Mahabad Branch
Abstract :
In this paper, firstly we obtain characterization for boundedness of the weighted differentiation composition operator from Q_K(p,q) space into weighted Zygmund space. Then we give an estimation for the essential norm of such an operator on the mentioned spaces. As an application, we present a characterization for the compactness of the above operator.
Keywords :
Boundedness , Compactness , Essential norm , Zygmund type space
Journal title :
Journal of Mahani Mathematical Research Center
Journal title :
Journal of Mahani Mathematical Research Center
