Planar Crossing Numbers of Graphs of Bounded Genus
Planar Crossing Numbers of Graphs of Bounded Genus
复制标题
有界亏格图的平面交叉数
DOI:
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发表时间:
2012
影响因子:
0.8
通讯作者:
I. Vrto
中科院分区:
文献类型:
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作者:
H. Djidjev;I. Vrto
Pach and Tóth proved that any n-vertex graph of genus g and maximum degree d has a planar crossing number at most cgdn, for a constant c>1. We improve on this result by decreasing the bound to O(dgn), and also prove that our result is tight within a constant factor. Our proof is constructive and yields an algorithm with time complexity O(dgn). As a consequence of our main result, we show a relation between the planar crossing number and the surface crossing number.