The authors consider a generic configuration of regions, consisting of a collection of distinct compact regions $\{ \Omega_i\}$ in $\mathbb{R}^{n+1}$ which may be either regions with smooth boundaries disjoint from the others or regions which meet on their piecewise smooth boundaries $\mathcal{B}_i$ in a generic way. They introduce a skeletal linking structure for the collection of regions which simultaneously captures the regions'' individual shapes and geometric properties as well as the ``positional geometry'''' of the collection. The linking structure extends in a minimal way the individual ``skeletal structures'''' on each of the regions. This allows the authors to significantly extend the mathematical methods introduced for single regions to the configuration of regions.
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