%0 Journal Article %T Strong Convergence to Common Fixed Points for Countable Families of Asymptotically Nonexpansive Mappings and Semigroups %A Wattanawitoon Kriengsak %A Kumam Poom %J Fixed Point Theory and Applications %D 2010 %I Springer %X We prove strong convergence theorems for countable families of asymptotically nonexpansive mappings and semigroups in Hilbert spaces. Our results extend and improve the recent results of Nakajo and Takahashi (2003) and of Zegeye and Shahzad (2008) from the class of nonexpansive mappings to asymptotically nonexpansive mappings. %U http://www.fixedpointtheoryandapplications.com/content/2010/301868