Treewidth is NP-Complete on Cubic Graphs
Bodlaender, Hans L.; Bonnet, Édouard; Jaffke, Lars; Knop, Dusan; Lima, Paloma Thome de; Milanič, Martin; Ordyniak, Sebastian; Pandey, Sukanya; Suchy, Ondrey
Journal article, Peer reviewed
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Date
2023Metadata
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- Department of Informatics [1013]
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Original version
Leibniz International Proceedings in Informatics. 2023, 285, 7:1-7:13. 10.4230/LIPIcs.IPEC.2023.7Abstract
In this paper, we show that Treewidth is NP-complete for cubic graphs, thereby improving the result by Bodlaender and Thilikos from 1997 that Treewidth is NP-complete on graphs with maximum degree at most 9. We add a new and simpler proof of the NP-completeness of treewidth, and show that Treewidth remains NP-complete on subcubic induced subgraphs of the infinite 3-dimensional grid.