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arXiv · 0910.4889

On the structure of graphs with path-width at most two

János Barát·Péter Hajnal·Yixun Lin·Aifeng Yang
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Abstract

Nancy G. Kinnersley and Michael A. Langston has determined the excluded minors for the class of graphs with path-width at most two by computer. Their list consisted of 110 graphs. Such a long list is difficult to handle and gives no insight to structural properties. We take a different route, and concentrate on the building blocks and how they are glued together. In this way, we get a characterization of 2-connected and 2-edge-connected graphs with path-width at most two. Along similar lines, we sketch the complete characterization of graphs with path-width at most two.

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János Barát, Péter Hajnal, Yixun Lin, Aifeng Yang. 2009-10-26. On the structure of graphs with path-width at most two. https://arxiv.org/abs/0910.4889

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