%0 Journal Article %T Weak and strong convergence theorems for nonexpansive semigroups in Banach spaces %A Sachiko Atsushiba %A Wataru Takahashi %J Fixed Point Theory and Applications %D 2005 %I Springer %R 10.1155/fpta.2005.343 %X We introduce an implicit iterative process for a nonexpansive semigroup and then we prove a weak convergence theorem for the nonexpansive semigroup in a uniformly convex Banach space which satisfies Opial's condition. Further, we discuss the strong convergence of the implicit iterative process. %U http://dx.doi.org/10.1155/FPTA.2005.343