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arXiv 2008.03784cs.DS
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线性时间内平面串并图的直线性平面性检验

Rectilinear Planarity Testing of Plane Series-Parallel Graphs in Linear Time

Walter Didimo, Michael Kaufmann, Giuseppe Liotta, Giacomo Ortali

摘要:

一个平面图是直线平面图,如果它允许一个嵌入保持直线图,其中每个边是水平的或垂直的。本文证明了对于任意具有$n$顶点的平面串-平行图$G$,直线平面性检验都可以在最优$O(n)$时间内求解.若$G$是直线平面图,则可以在$O(n)$时间内构造出$G$的保嵌入直线平面图.我们的研究结果是基于直线平面串联平行图的正交螺旋的间隔,他们的组件可以有一个特征,它导致了一个算法,可以很容易地实现。

英文摘要:

A plane graph is rectilinear planar if it admits an embedding-preserving straight-line drawing where each edge is either horizontal or vertical. We prove that rectilinear planarity testing can be solved in optimal $O(n)$ time for any plane series-parallel graph $G$ with $n$ vertices. If $G$ is rectilinear planar, an embedding-preserving rectilinear planar drawing of $G$ can be constructed in $O(n)$ time. Our result is based on a characterization of rectilinear planar series-parallel graphs in terms of intervals of orthogonal spirality that their components can have, and it leads to an algorithm that can be easily implemented.

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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