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Some remarks on Betti numbers of random polygon spaces

Dombry, Clément ; Mazza, Christian

In: Random Structures & Algorithms, 2010, vol. 37, no. 1, p. 67–84

Polygon spaces such as $ M_{\ell} = \{ (u_{1,\ldots,} u_{n})\; \epsilon \; S^{1}\times \ldots S^{1}, \sum \nolimits^{n}_{i=1}\;l_{i}u_{i} = 0 \}/SO(2) $, or the three-dimensional analogs Nℓ play an important rle in geometry and topology, and are also of interest in robotics where the li model the lengths of robot arms. When n is large, one can assume that each li is a positive real valued...