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Editing to a Planar Graph of Given Degrees

Abstract : We consider the following graph modification problem. Let the input consist of a graph $G=(V,E)$, a weight function $w\colon V\cup E\rightarrow \mathbb{N}$, a cost function $c\colon V\cup E\rightarrow \mathbb{N}$ and a degree function $\delta\colon V\rightarrow \mathbb{N}_0$, together with three integers $k_v$, $k_e$ and $C$. The question is whether we can delete a set of vertices of total weight at most $k_v$ and a set of edges of total weight at most $k_e$ so that the total cost of the deleted elements is at most $C$ and every non-deleted vertex $v$ has degree $\delta(v)$ in the resulting graph~$G'$. We also consider the variant in which ~$G'$ must be connected. Both problems are known to be \classNP-complete and \classW{1}-hard when parameterized by $k_v+k_e$. We prove that, when restricted to planar graphs, they stay \classNP-complete but have polynomial kernels when parameterized by $k_v+k_e$.
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Submitted on : Wednesday, March 27, 2019 - 2:37:26 PM
Last modification on : Monday, October 11, 2021 - 1:24:08 PM
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Konrad K. Dabrowski, Petr A. Golovach, Pim Van'T Hof, Daniël Paulusma, Dimitrios M. Thilikos. Editing to a Planar Graph of Given Degrees. CSR: Computer Science in Russia, Jul 2015, Listvyanka, Russia. pp.143-156, ⟨10.1007/978-3-319-20297-6_10⟩. ⟨lirmm-01225602⟩



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