Viscosity approximation methods for multivalued nonexpansive mappings in geodesic spaces
Bancha Panyanak, Suthep Suantai · Fixed Point Theory and Applications · 2015
Abstract We prove strong convergence of the viscosity approximation method for multivalued nonexpansive mappings in $\operatorname{CAT}(0)$ CAT ( 0 ) spaces. Our results generalize the results of Dhompongsa et al. (2012), Wangkeeree and Preechasilp (2013) and many others. Some related results in $\mathbb{R}$ R -trees are also given.