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EMBEDDING POINT SETS INTO PLANE GRAPHS OF SMALL DILATION

    https://doi.org/10.1142/S0218195907002318Cited by:6 (Source: Crossref)

    Let S be a set of points in the plane. What is the minimum possible dilation of all plane graphs that contain S? Even for a set S as simple as five points evenly placed on the circle, this question seems hard to answer; it is not even clear if there exists a lower bound > 1. In this paper we provide the first upper and lower bounds for the embedding problem.

    1. Each finite point set can be embedded into the vertex set of a finite triangulation of dilation ≤ 1.1247.

    2. Each embedding of a closed convex curve has dilation ≥ 1.00157.

    3. Let P be the plane graph that results from intersecting n infinite families of equidistant, parallel lines in general position. Then the vertex set of P has dilation .

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