Edge-intersection graphs of grid paths: The bend-number
Edge-intersection graphs of grid paths: The bend-number
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网格路径的边相交图:弯曲数
DOI:
10.1016/j.dam.2013.10.035
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Torsten Ueckerdt
中科院分区:
文献类型:
--
作者:
Daniel Heldt;Kolja B. Knauer;Torsten Ueckerdt
We investigate edge-intersection graphs of paths in the plane grid, regarding a parameter called the bend-number, ie, every vertex is represented by a grid path and two vertices are adjacent if and only if the two grid paths share at least one grid-edge. The bend-number is the minimum k such that grid-paths with at most k bends each suffice to represent a given graph. This parameter is related to the interval-number and the track-number of a graph. We show that for every k there is a graph with bend-number k. Moreover we provide new upper and lower bounds of the bend-number of graphs in terms of degeneracy, treewidth, edge clique covers and the maximum degree. Furthermore we give bounds on the bend-number of K m, n and determine it exactly for some pairs of m and n. Finally, we prove that recognizing single-bend graphs is NP-complete, providing the first such result in this field.
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DOI:
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发表时间:
1999
期刊:
影响因子:
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作者:
A. Kostochka;D. West
通讯作者:
D. West
DOI:
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发表时间:
2005
期刊:
Electron. Notes Discret. Math.
影响因子:
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作者:
D. Gonçalves;P. Ochem
通讯作者:
P. Ochem
影响因子:
1.1
作者:
Minghui Jiang
通讯作者:
Minghui Jiang
DOI:
10.1016/j.disc.2015.10.023
发表时间:
2016
期刊:
Discret. Math.
影响因子:
--
作者:
Kolja B. Knauer;Torsten Ueckerdt
通讯作者:
Torsten Ueckerdt
DOI:
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发表时间:
2011
期刊:
Latin American Symposium on Theoretical Informatics
影响因子:
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作者:
Daniel Heldt;K. Knauer;T. Ueckerdt
通讯作者:
T. Ueckerdt