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Rooted grid minors

Intuitively, a tangle of large order in a graph is a highly-connected part of the graph, and it is known that if a graph has a tangle of large order then it has a large grid minor. Here we show that for any k, if G has a tangle of large order and Z is a set of vertices of cardinality k that cannot be separated from the tangle by any separation of order less than k, then G has a large grid minor containing Z, in which the members of Z all belong to the outside of the grid. This is a lemma for use in a later paper.

preprint2013arXivOpen access
Dániel MarxPaul SeymourPaul Wollan
math.CO
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Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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Dániel MarxPaul SeymourPaul Wollan

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