International Journal For Multidisciplinary Research

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Doubly Restrained Domination in Graphs

Author(s) Ms. Jessa Mae Sale Leuveras, Dr. Enrico Limbo Enriquez
Country Philippines
Abstract Let G be a connected simple graph. A subset S of V(G) is a dominating set of G if for every v∈V(G)∖S, there exists x∈S such that xv∈E(G). A set S⊆V(G) is a restrained dominating set if every vertex not in S is adjacent to a vertex in S and to a vertex in V(G)∖S. A nonempty subset S⊆V(G) is doubly restrained dominating set of G, if S is a dominating set and both 〈S〉 and 〈V(G)∖S〉 have no isolated vertices. The minimum cardinality of a doubly restrained dominating set of G, denoted by γ_rr (G), is called the doubly restrained domination number of G. In this paper, we initiate the study of the concept and give the domination number of some special graphs and the corona of two graphs.
Keywords dominating set, restrained dominating set, doubly restrained dominating set
Field Mathematics
Published In Volume 7, Issue 2, March-April 2025
Published On 2025-04-12
DOI https://doi.org/10.36948/ijfmr.2025.v07i02.41412

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