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arXiv · 1508.02773

Editing to a Planar Graph of Given Degrees

Konrad K. Dabrowski·Petr A. Golovach·Pim van 't Hof·Daniel Paulusma·Dimitrios M. Thilikos
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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 NP-complete and W[1]-hard when parameterized by $k_v+k_e$. We prove that, when restricted to planar graphs, they stay NP-complete but have polynomial kernels when parameterized by $k_v+k_e$.

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Konrad K. Dabrowski, Petr A. Golovach, Pim van 't Hof, Daniel Paulusma, Dimitrios M. Thilikos. 2015-08-11. Editing to a Planar Graph of Given Degrees. https://arxiv.org/abs/1508.02773

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