Untangling Polygons and Graphs
Untangling Polygons and Graphs
复制标题
理清多边形和图形
DOI:
10.1007/s00454-009-9150-x
复制
发表时间:
2008
影响因子:
0.8
通讯作者:
Josef Cibulka
中科院分区:
文献类型:
--
作者:
Josef Cibulka
Untangling is a process in which some vertices in a drawing of a planar graph are moved to obtain a straight-line plane drawing. The aim is to move as few vertices as possible. We present an algorithm that untangles the cycle graphCnwhile keeping Ω(n2/3) vertices fixed.For any connected graphG, we also present an upper bound on the number of fixed vertices in the worst case. The bound is a function of the number of vertices, maximum degree, and diameter ofG. One consequence is that every 3-connected planar graph has a drawingδsuch that at mostO((nlogn)2/3) vertices are fixed in every untangling ofδ.
DOI:
--
发表时间:
2009
期刊:
Discrete & Computational Geometry 42
影响因子:
--
作者:
Xavier Goaoc;Jan Kratochvil;Yoshio Okamoto;Chan-Su Shin;Andreas Spillner;Alexander Wolff
通讯作者:
Alexander Wolff