Signed domination and Mycielski’s structure in graphs
RAIRO - Operations Research - Recherche Opérationnelle, Tome 54 (2020) no. 4, pp. 1077-1086.

Let G = (V, E) be a graph. The function f : V(G) → {−1, 1} is a signed dominating function if for every vertex v ∈ V(G), ∑ x f(x)≥1. The value of ω(f)=∑ x f(x) is called the weight of f. The signed domination number of G is the minimum weight of a signed dominating function of G. In this paper, we initiate the study of the signed domination numbers of Mycielski graphs and find some upper bounds for this parameter. We also calculate the signed domination number of the Mycielski graph when the underlying graph is a star, a wheel, a fan, a Dutch windmill, a cycle, a path or a complete bipartite graph.

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DOI : 10.1051/ro/2019109
Classification : 05C69, 05C75
Mots-clés : Signed domination number, Mycielski construction 
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     title = {Signed domination and {Mycielski{\textquoteright}s} structure in graphs},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {1077--1086},
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Ghameshlou, Arezoo N.; Shaminezhad, Athena; Vatandoost, Ebrahim; Khodkar, Abdollah. Signed domination and Mycielski’s structure in graphs. RAIRO - Operations Research - Recherche Opérationnelle, Tome 54 (2020) no. 4, pp. 1077-1086. doi : 10.1051/ro/2019109. http://archive.numdam.org/articles/10.1051/ro/2019109/

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