Browsing by Author "Sundareswaran, Raman"
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Computational complexity of domination integrity in graphs
Sundareswaran, Raman; Swaminathan, V. (Işık University Press, 2015)In a graph G, those dominating sets S which give minimum value for S + m(G−S), where m(G−S) denotes the maximum order of a component of G−S, are called dominating integrity sets of G (briefly called DIsets of G). This ... 
Distance majorization sets in graphs
Sundareswaran, Raman; Swaminathan, V. (Işık University Press, 2015)Let G = (V, E) be a simple graph. A subset D of V (G) is said to be a distance majorization set (or dm  set) if for every vertex u ∈ V − D, there exists a vertex v ∈ D such that d(u, v) ≥ deg(u) + deg(v). The minimum ... 
Integrity and domination integrity of gear graphs
Sundareswaran, Raman; Swaminathan, V. (Işık University Press, 20160630)C.A. Barefoot, et. al. [4] introduced the concept of the integrity of a graph. It is an useful measure of vulnerability and it is defined as follows. I(G) = min{S + m(G − S) : S ⊂ V (G)}, where m(G − S) denotes the order ... 
On zagreb indices of double vertex graphs
Kumar, Sanjay Sampath; Sundareswaran, Raman; Sundarakannan, Mahilmaran (Işık University Press, 2020)Let G = (V, E) be a graph with at least 2 vertices, then the double vertex graph U₂(G) is the graph whose vertex set consists of all 2subsets of V such that two distinct vertices {x, y} and {u, v} are adjacent if and only ... 
Tight just excellent graphs
Mudartha, Irene Kulrekha; Sundareswaran, Raman; Swaminathan, V. (Işık University Press, 2019)A graph G is χexcellent if for every vertex v, there exists a chromatic partition π such that {v} ∈ π.A graph G is just χexcellent if every vertex appears as a singleton in exactly one χpartition. In this paper, a special ...