%0 Journal Article %T Composition operators acting on weighted Hilbert spaces of analytic functions %J Sahand Communications in Mathematical Analysis %I University of Maragheh %Z 2322-5807 %A Hassanlou, Mostafa %D 2015 %\ 06/01/2015 %V 02 %N 1 %P 71-79 %! Composition operators acting on weighted Hilbert spaces of analytic functions %K Composition operators %K Weighted analytic space %K Hilbert-Schmidt %K Schatten-class %R %X In this paper, we considered composition operators on weighted Hilbert spaces of analytic functions and  observed that a formula for the  essential norm, gives a Hilbert-Schmidt characterization and characterizes the membership in Schatten-class for these operators. Also, closed range composition operators  are investigated. %U https://scma.maragheh.ac.ir/article_12356_e453111f3d3e0c47afab4c470745ab38.pdf