Eigentlich operierende Gruppen von Isometrien
Equivalent contractive conditions in metric spaces.
Erweiterung einer stetigen Abbildung
Every graph is a self-similar set.
Extension and reconstruction theorems for the Urysohn universal metric space
We prove some extension theorems involving uniformly continuous maps of the universal Urysohn space. As an application, we prove reconstruction theorems for certain groups of autohomeomorphisms of this space and of its open subsets.
Extensions of Ćirić generalised contractions
Extensions of compact continuous maps into decomposable sets
Extensions of nonexpansive mappings in the Hilbert ball with the hyperbolic metric. I.
Extensions of nonexpansive mappings in the Hilbert ball with the hyperbolic metric. II.