3 problems

Let $X$ be a finite-dimensional normed space, with sites $P_k$ that are “nice” and “far enough” from each other. A zone diagram is a family of regions satisfying the zone equations…

Let $X$ be a metric space, let the index set of sites $P_k$ have any cardinality, and suppose the sets $P_k$ are “nice” and “far enough” from each other. A zone diagram is a family…

Let $X$ be an $m$-space, with sites $P_1,dots,P_n$ and the associated zone-diagram existence problem. A zone diagram is a family of regions satisfying the zone equations determined…