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arXiv cs/0102006cs.DScs.DM
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有序支撑树及其应用

Orderly Spanning Trees with Applications

Yi-Ting Chiang, Ching-Chi Lin, Hsueh-I Lu

摘要:

引入并研究了平面图的{ \em有序生成树}。这个算法工具推广了{ \em规范排序},它只存在于三连通平面图。虽然不是每个平面图承认一个有序的生成树,我们提供了一个算法来计算一个{ \em有序对}的任何连接的平面图$G$,由平面图$H$的$G$,和有序的生成树的$H$。我们还提出了有序生成树的几个应用:(1)Schnyder的实现定理的一个新的构造性证明,(2)第一个面积最优的2-可见性绘制的$G$,和(3)最有名的编码$G$与O(1)-时间查询支持。本文中的所有算法都是在线性时间内运行的。

英文摘要:

We introduce and study the {\em orderly spanning trees} of plane graphs. This algorithmic tool generalizes {\em canonical orderings}, which exist only for triconnected plane graphs. Although not every plane graph admits an orderly spanning tree, we provide an algorithm to compute an {\em orderly pair} for any connected planar graph $G$, consisting of a plane graph $H$ of $G$, and an orderly spanning tree of $H$. We also present several applications of orderly spanning trees: (1) a new constructive proof for Schnyder's Realizer Theorem, (2) the first area-optimal 2-visibility drawing of $G$, and (3) the best known encodings of $G$ with O(1)-time query support. All algorithms in this paper run in linear time.

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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