
arXiv: 1906.09213
The problem of $d$-Path Vertex Cover, $d$-PVC lies in determining a subset $F$ of vertices of a given graph $G=(V,E)$ such that $G \setminus F$ does not contain a path on $d$ vertices. The paths we aim to cover need not to be induced. It is known that the $d$-PVC problem is NP-complete for any $d \ge 2$. When parameterized by the size of the solution $k$, 5-PVC has direct trivial algorithm with $\mathcal{O}(5^kn^{\mathcal{O}(1)})$ running time and, since $d$-PVC is a special case of $d$-Hitting Set, an algorithm running in $\mathcal{O}(4.0755^kn^{\mathcal{O}(1)})$ time is known. In this paper we present an iterative compression algorithm that solves the 5-PVC problem in $\mathcal{O}(4^kn^{\mathcal{O}(1)})$ time.
graph algorithms, FOS: Computer and information sciences, Hitting Set, 004, d-Path Vertex Cover, Computer Science - Data Structures and Algorithms, Data Structures and Algorithms (cs.DS), iterative compression, parameterized complexity, ddc: ddc:004
graph algorithms, FOS: Computer and information sciences, Hitting Set, 004, d-Path Vertex Cover, Computer Science - Data Structures and Algorithms, Data Structures and Algorithms (cs.DS), iterative compression, parameterized complexity, ddc: ddc:004
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