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arXiv · 1912.00516

The (theta, wheel)-free graphs Part IV: induced paths and cycles

Marko Radovanović·Nicolas Trotignon·Kristina Vušković
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Abstract

A hole in a graph is a chordless cycle of length at least 4. A theta is a graph formed by three internally vertex-disjoint paths of length at least 2 between the same pair of distinct vertices. A wheel is a graph formed by a hole and a node that has at least 3 neighbors in the hole. In this series of papers we study the class of graphs that do not contain as an induced subgraph a theta nor a wheel. In Part II of the series we prove a decomposition theorem for this class, that uses clique cutsets and 2-joins. In this paper we use this decomposition theorem to solve several problems related to finding induced paths and cycles in our class.

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Marko Radovanović, Nicolas Trotignon, Kristina Vušković. 2019-12-01. The (theta, wheel)-free graphs Part IV: induced paths and cycles. https://doi.org/10.1016/j.jctb.2020.06.002

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