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arXiv 1006.3167cs.DM
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超图的树宽与曲面对偶

Tree-width of hypergraphs and surface duality

Frédéric Mazoit

摘要:

在Graph Minors III中,Robertson和Seymour写道:“平面图的树宽和它的几何对偶的树宽似乎近似相等--事实上,我们已经说服自己,它们最多相差一个”。他们从来没有给出证据。在本文中,我们证明了这一声明的一般嵌入超图一般曲面,我们证明了我们的界是紧的。

英文摘要:

In Graph Minors III, Robertson and Seymour write: "It seems that the tree-width of a planar graph and the tree-width of its geometric dual are approximately equal - indeed, we have convinced ourselves that they differ by at most one". They never gave a proof of this. In this paper, we prove a generalisation of this statement to embedding of hypergraphs on general surfaces, and we prove that our bound is tight.

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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