Ein Schliessungssatz der Elementargeometrie.
Einbettung endlicher metrischer Räume
Einen besondere Art gleichseitiger Sechsecke.
Endliche minkowskische Ebenen von Charakteristik ... 2.
Equilateral triangles and continuous curves
Euclidean quasiconvexity.
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.