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arXiv · 2410.23878

Feedback Vertex Set for pseudo-disk graphs in subexponential FPT time

Gaétan Berthe·Marin Bougeret·Daniel Gonçalves·Jean-Florent Raymond
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Abstract

In this paper, we investigate the existence of parameterized algorithms running in subexponential time for two fundamental cycle-hitting problems: Feedback Vertex Set (FVS) and Triangle Hitting (TH). We focus on the class of pseudo-disk graphs, which forms a common generalization of several graph classes where such results exist, like disk graphs and square graphs. In these graphs, we show that TH can be solved in time $2^{O(k^{3/4}\log k)}n^{O(1)}$, and given a geometric representation FVS can be solved in time $2^{O(k^{6/7}\log k)}n^{O(1)}$.

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Gaétan Berthe, Marin Bougeret, Daniel Gonçalves, Jean-Florent Raymond. 2024-10-31. Feedback Vertex Set for pseudo-disk graphs in subexponential FPT time. https://arxiv.org/abs/2410.23878

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