Graph minors. VI. Disjoint paths across a disc
Graph minors. VI. Disjoint paths across a disc
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图未成年人。
DOI:
10.1016/0095-8956(86)90031-6
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发表时间:
1986
期刊:
影响因子:
--
通讯作者:
P. Seymour
中科院分区:
文献类型:
--
作者:
N. Robertson;P. Seymour
LetGbe a graph drawn on a disc, and let the vertices ofGon the boundary of the disc bes1, …,sk,t1, …,tkin some order. When are therekvertex-disjoint paths ofGjoiningsiandti(1 ≤i≤k), respectively? We give a structural characterization and a polynomial algorithm for this problem. We also solve the same question when the disc is replaced by a cylinder.