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A Polynomial Kernel for Bipartite Permutation Vertex Deletion
J. Derbisz, , J. Madathil, A. Sahu, S. Saurabh, S. Verma
Published in Springer
2022
Volume: 84
   
Issue: 11
Pages: 3246 - 3275
Abstract
In a permutation graph, vertices represent the elements of a permutation, and edges represent pairs of elements that are reversed by the permutation. In the Permutation Vertex Deletion problem, given an undirected graph G and an integer k, the objective is to test whether there exists a vertex subset S⊆ V(G) such that | S| ≤ k and G- S is a permutation graph. The parameterized complexity of Permutation Vertex Deletion is a well-known open problem. Bożyk et al. [IPEC 2020] initiated a study on this problem by requiring that G- S be a bipartite permutation graph (a permutation graph that is bipartite). They called this the Bipartite Permutation Vertex Deletion (BPVD) problem. They showed that the problem admits a factor 9-approximation algorithm as well as a fixed parameter tractable (FPT) algorithm running in time O(9 k| V(G) | 9). Moreover, they posed the question whetherBPVD admits a polynomial kernel. We resolve this question in the affirmative by designing a polynomial kernel for BPVD. In particular, we obtain the following: Given an instance (G, k) of BPVD, in polynomial time we obtain an equivalent instance (G′, k′) of BPVD such that k′≤ k, and | V(G′) | + | E(G′) | ≤ kO(1). © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
About the journal
JournalAlgorithmica
PublisherSpringer
ISSN01784617