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arXiv 1012.2206math.CO
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近似凸多边形的三角剖分

Triangulations of nearly convex polygons

Roland Bacher, Frédéric Mouton

摘要:

在$\C$的凸包$\conv(\C)$的有限集$\C$中计算顶点的欧氏三角剖分在算法上和理论上都是困难的。本文的目的是描述几乎凸多边形,这类配置,这一问题可以在一定程度上解决。近似凸多边形是弱凸多边形(边被附加点细分的凸多边形)的无穷小扰动。我们的主要结果表明,三角剖分多项式,枚举所有三角剖分的一个几乎凸多边形,定义在一个简单的方式在多项式的“扰动”的边缘。

英文摘要:

Counting Euclidean triangulations with vertices in a finite set $\C$ of the convex hull $\conv(\C)$ of $\C$ is difficult in general, both algorithmically and theoretically. The aim of this paper is to describe nearly convex polygons, a class of configurations for which this problem can be solved to some extent. Loosely speaking, a nearly convex polygon is an infinitesimal perturbation of a weakly convex polygon (a convex polygon with edges subdivided by additional points). Our main result shows that the triangulation polynomial, enumerating all triangulations of a nearly convex polygon, is defined in a straightforward way in terms of polynomials associated to the ``perturbed'' edges.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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