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Excluding subdivisions of bounded degree graphs

机译:不包括有界度图的细分

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Let H be a fixed graph. What can be said about graphs G that have no subgraph isomorphic to a subdivision of H? Grohe and Marx proved that such graphs G satisfy a certain structure theorem that is not satisfied by graphs that contain a subdivision of a (larger) graph H-1. Dvorak found a clever strengthening-his structure is not satisfied by graphs that contain a subdivision of a graph H-2, where H-2 has "similar embedding properties" as H. Building upon Dvorak's theorem, we prove that said graphs G satisfy a similar structure theorem. Our structure is not satisfied by graphs that contain a subdivision of a graph H-3 that has similar embedding properties as H and has the same maximum degree as H. This will be important in a forthcoming application to well-quasi-ordering. (C) 2018 Elsevier Inc. All rights reserved.
机译:让H成为一个固定的图表。 关于图表G的图表G可以对H的细分来说是什么? GROHE和MARX证明,这种图表G满足了不满足于包含(较大)图H-1的细分的图表不满足的特定结构定理。 Dvorak发现了一个聪明的加强 - 他的结构不满足图形H-2的细分的图表,其中H-2具有“类似的嵌入属性”,如同Dvorak的定理,我们证明了所述图表G满足A 类似的结构定理。 我们的结构不满足图表H-3的细分的图表,其具有与H类似的嵌入属性并且具有与H相同的最大程度。这将在即将到来的应用到良好的准订购中是重要的。 (c)2018年Elsevier Inc.保留所有权利。

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