Mohsen Alambardar Meybodi ; Abolfazl Poureidi - On $[1,2]$-Domination in Interval and Circle Graphs

dmtcs:13194 - Discrete Mathematics & Theoretical Computer Science, November 15, 2024, vol. 26:3 - https://doi.org/10.46298/dmtcs.13194
On $[1,2]$-Domination in Interval and Circle GraphsArticle

Authors: Mohsen Alambardar Meybodi ; Abolfazl Poureidi

    A subset $S$ of vertices in a graph $G=(V, E)$ is a Dominating Set if each vertex in $V(G)\setminus S$ is adjacent to at least one vertex in $S$. Chellali et al. in 2013, by restricting the number of neighbors in $S$ of a vertex outside $S$, introduced the concept of $[1,j]$-dominating set. A set $D \subseteq V$ of a graph $G = (V, E)$ is called a $[1,j]$-Dominating Set of $G$ if every vertex not in $D$ has at least one neighbor and at most $j$ neighbors in $D$. The Minimum $[1,j]$-Domination problem is the problem of finding the minimum $[1,j]$-dominating set $D$. Given a positive integer $k$ and a graph $G = (V, E)$, the $[1,j]$-Domination Decision problem is to decide whether $G$ has a $[1,j]$-dominating set of cardinality at most $k$. A polynomial-time algorithm was obtained in split graphs for a constant $j$ in contrast to the Dominating Set problem which is NP-hard for split graphs. This result motivates us to investigate the effect of restriction $j$ on the complexity of $[1,j]$-domination problem on various classes of graphs. Although for $j\geq 3$, it has been proved that the minimum of classical domination is equal to minimum $[1,j]$-domination in interval graphs, the complexity of finding the minimum $[1,2]$-domination in interval graphs is still outstanding. In this paper, we propose a polynomial-time algorithm for computing a minimum $[1,2]$-dominating set on interval graphs by a dynamic programming technique. Next, on the negative side, we show that the minimum $[1,2]$-dominating set problem on circle graphs is $NP$-complete.


    Volume: vol. 26:3
    Section: Discrete Algorithms
    Published on: November 15, 2024
    Accepted on: September 19, 2024
    Submitted on: March 8, 2024
    Keywords: Computer Science - Computational Complexity,Computer Science - Data Structures and Algorithms,Mathematics - Combinatorics

    Consultation statistics

    This page has been seen 44 times.
    This article's PDF has been downloaded 21 times.