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Generic unlabeled global rigidity

Let \mathbf{p} be a configuration of n points in \mathbb{R}^d for some n and some d \ge 2. Each pair of points has a Euclidean length in the configuration. Given some
graph G on n vertices, we measure the point-pair lengths corresponding to the edges of G.

In this paper, we study the question of when a generic \mathbf{p} in d dimensions will be uniquely determined (up to an unknowable Euclidean transformation) from a given set of point-pair lengths together with knowledge of d and n. In this setting the lengths are given simply as a set of real numbers; they are not labeled with the combinatorial data that describes which point-pair gave rise to which length, nor is data about G given.

We show, perhaps surprisingly, that in terms of generic uniqueness, labels have no effect. A generic configuration is determined by an unlabeled set of point-pair lengths(together with d and n) iff it is determined by the labeled edge lengths.