Das Eigenwerttheorem von Krasnoselski für -kondensierende Abbildungen
Data dependence for Ishikawa iteration when dealing with contractive-like operators.
Decomposition conditions for two-point boundary value problems.
Degree of convergence of iterative algorithms for boundedly Lipschitzian strong pseudocontractions.
Demiclosed principle for asymptotically nonexpansive mappings in CAT(0) spaces.
Diametrically contractive maps and fixed points.
Does Kirk's theorem hold for multivalued nonexpansive mappings?
Dual convergences of iteration processes for nonexpansive mappings in Banach spaces
In this paper we establish a dual weak convergence theorem for the Ishikawa iteration process for nonexpansive mappings in a reflexive and strictly convex Banach space with a uniformly Gâteaux differentiable norm, and then apply this result to study the problem of the weak convergence of the iteration process.