A open support of a vertex v under addition is defined by Σ𝑢 ∈𝑁(𝑣)deg(𝑢) and it is denoted by supp(v). A open support of a graph under addition is defined by Σ𝑣 ∈𝑉(𝐺)supp(𝑣) and it is denoted by supp(G). In this paper, open support of some graphs is studied.
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