Graph Minors. XXII. Irrelevant vertices in linkage problems

Neil Robertson; Paul Seymour

doi:10.1016/j.jctb.2007.12.007

Graph Minors. XXII. Irrelevant vertices in linkage problems

Neil Robertson, Paul Seymour

Mathematics

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

In the algorithm for the disjoint paths problem given in Graph Minors XIII, we used without proof a lemma that, in solving such a problem, a vertex which was sufficiently "insulated" from the rest of the graph by a large planar piece of the graph was irrelevant, and could be deleted without changing the problem. In this paper we prove the lemma.

Original language	English (US)
Pages (from-to)	530-563
Number of pages	34
Journal	Journal of Combinatorial Theory. Series B
Volume	102
Issue number	2
DOIs	https://doi.org/10.1016/j.jctb.2007.12.007
State	Published - Mar 2012

All Science Journal Classification (ASJC) codes

Theoretical Computer Science
Discrete Mathematics and Combinatorics
Computational Theory and Mathematics

Keywords

Disjoint paths algorithm
Graph minors
Irrelevant vertex
Linkage problem

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10.1016/j.jctb.2007.12.007

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abstract = "In the algorithm for the disjoint paths problem given in Graph Minors XIII, we used without proof a lemma that, in solving such a problem, a vertex which was sufficiently {"}insulated{"} from the rest of the graph by a large planar piece of the graph was irrelevant, and could be deleted without changing the problem. In this paper we prove the lemma.",

keywords = "Disjoint paths algorithm, Graph minors, Irrelevant vertex, Linkage problem",

author = "Neil Robertson and Paul Seymour",

note = "Funding Information: E-mail address: [email protected] (P. Seymour). 1 Partially supported by NSF grant DMS 8903132. 2 This work was carried out while this author was employed at Telcordia Technologies in Morristown, NJ.",

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KW - Disjoint paths algorithm

KW - Graph minors

KW - Irrelevant vertex

KW - Linkage problem

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Graph Minors. XXII. Irrelevant vertices in linkage problems

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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