DMGT

ISSN 1234-3099 (print version)

ISSN 2083-5892 (electronic version)

https://doi.org/10.7151/dmgt

Discussiones Mathematicae Graph Theory

Journal Impact Factor (JIF 2022): 0.7

5-year Journal Impact Factor (2022): 0.7

CiteScore (2022): 1.9

SNIP (2022): 0.902

Discussiones Mathematicae Graph Theory

Article in volume


Authors:

A. Brandstädt

Andreas Brandstädt

Institut für Informatik Universität Rostock Germany

email: andreas.brandstaedt@uni-rostock.de

R. Mosca

Raffaele Mosca

email: r.mosca@unich.it

Title:

Finding dominating induced matchings in $P_9$-free graphs in polynomial time

PDF

Source:

Discussiones Mathematicae Graph Theory 42(4) (2022) 1139-1162

Received: 2019-10-07 , Revised: 2020-05-08 , Accepted: 2020-05-13 , Available online: 2020-06-08 , https://doi.org/10.7151/dmgt.2336

Abstract:

Let $G=(V,E)$ be a finite undirected graph. An edge subset $E' \subseteq E$ is a dominating induced matching (d.i.m.) in $G$ if every edge in $E$ is intersected by exactly one edge of $E'$. The Dominating Induced Matching (DIM) problem asks for the existence of a d.i.m. in $G$. The DIM problem is \NP-complete even for very restricted graph classes such as planar bipartite graphs with maximum degree 3 but was solved in linear time for $P_7$-free graphs and in polynomial time for $P_8$-free graphs. In this paper, we solve it in polynomial time for $P_9$-free graphs.

Keywords:

dominating induced matching, $P_9$-free graphs, polynomial time algorithm

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