%0 Journal Article %T On the topological centers of module actions %J Sahand Communications in Mathematical Analysis %I University of Maragheh %Z 2322-5807 %A Haghnejad Azar, Kazem %D 2016 %\ 06/01/2016 %V 03 %N 2 %P 67-74 %! On the topological centers of module actions %K Arens regularity %K Topological centers %K Module actions %R %X In this paper, we  study the Arens regularity properties of module actions. We investigate some properties of topological centers of module actions ${Z}^\ell_{B^{**}}(A^{**})$ and  ${Z}^\ell_{A^{**}}(B^{**})$ with some conclusions in group algebras. %U https://scma.maragheh.ac.ir/article_19748_3fb8c456b2e4d1f04f48b4146fde0d2d.pdf