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arXiv 0909.4329math.CO
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平面嵌入壁的排除次结构定理

The excluded minor structure theorem with planarly embedded wall

Bojan Mohar

摘要:

一个图几乎是嵌入在一个表面,如果它是由图$G_0$,嵌入在表面上,连同有界数量的涡没有大的交易。它表明,每一个大的墙(或网格子)在几乎嵌入图,其中许多行相交的嵌入子图$G_0$的近嵌入,包含一个大的子墙是平面嵌入在$G_0$。这个结果提供了一些隐藏的细节需要一个强版本的Robertson和Seymour的排除子定理,如[K。河原林,B. Mohar,图子式理论的一些最新进展和应用,图组合。23(2007)1-46]。

英文摘要:

A graph is nearly embedded in a surface if it consists of graph $G_0$ that is embedded in the surface, together with a bounded number of vortices having no large transactions. It is shown that every large wall (or grid minor) in a nearly embedded graph, many rows of which intersect the embedded subgraph $G_0$ of the near-embedding, contains a large subwall that is planarly embedded within $G_0$. This result provides some hidden details needed for a strong version of the Robertson and Seymour's excluded minor theorem as presented in [K. Kawarabayashi, B. Mohar, Some recent progress and applications in graph minor theory, Graphs Combin. 23 (2007) 1-46].

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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