Blar i Department of Informatics på forfatter "Ordyniak, Sebastian"
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Towards a Polynomial Kernel for Directed Feedback Vertex Set
Bergougnoux, Benjamin; Eiben, Eduard; Ganian, Robert; Ordyniak, Sebastian; Ramanujan, M. S. (Journal article; Peer reviewed, 2020)In the DIRECTED FEEDBACK VERTEX SET (DFVS) problem, the input is a directed graph D and an integer k. The objective is to determine whether there exists a set of at most k vertices intersecting every directed cycle of D. ... -
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, 2023)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 ...