Abstract
We study the computational complexity of Feedback Vertex Set on subclasses of Hamiltonian graphs. In particular, we consider Hamiltonian graphs that are regular or are planar and regular. Moreover, we study the less known class of p-Hamiltonian-ordered graphs, which are graphs that admit for any p-tuple of vertices a Hamiltonian cycle visiting them in the order given by the tuple. We prove that Feedback Vertex Set remains \({\text {NP}}\)-hard in these restricted cases, even if a Hamiltonian cycle is additionally given as part of the input.
T. Fluschnik—Supported by DFG, project TORE (NI 369/18).
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Cavallaro, D., Fluschnik, T. (2021). Feedback Vertex Set on Hamiltonian Graphs. In: Kowalik, Ł., Pilipczuk, M., Rzążewski, P. (eds) Graph-Theoretic Concepts in Computer Science. WG 2021. Lecture Notes in Computer Science(), vol 12911. Springer, Cham. https://doi.org/10.1007/978-3-030-86838-3_16
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