Zone diagrams in Euclidean spaces and in other normed spaces
Akitoshi Kawamura, Jiřı́ Matoušek, Takeshi Tokuyama · 2010
Zone diagram is a variation on the classical concept of a Voronoi diagram. Given n sites in a metric space that compete for territory, the zone diagram is an equilibrium state in the competition. Formally it is defined as a fixed point of a certain "dominance" map.