Abstract:A. The moduli space of planar polygons with generic side lengths is a closed, smooth manifold. Mapping a polygon to its reflected image across the X-axis defines a fixed-pointfree involution on these moduli spaces, making them into free Z 2 -spaces. There are some important numerical parameters associated with free Z 2 -spaces, like index and coindex. In this paper, we compute these parameters for some moduli spaces of polygons. We also determine for which of these spaces a generalized version of the Borsuk-Ul… Show more
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