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What is the neighborhood of a vertex in a graph?
What is the neighborhood of a vertex in a graph?
The neighborhood of a vertex v in a graph G, denoted as $N_G(v)$, is the set of all vertices adjacent to v, i.e., $N_G(v) = {u \in V(G) : uv \in E(G)}$.
How are the open and closed neighborhoods of a set D in a graph defined?
How are the open and closed neighborhoods of a set D in a graph defined?
The open neighborhood of a set D in a graph G, denoted as $N_G(D)$, is the set of all vertices adjacent to any vertex in D, i.e., $N_G(D) = \bigcup_{v \in D} N_G(v)$. The closed neighborhood of a set D in a graph G, denoted as $N_G[D]$, is the set of D and all vertices adjacent to any vertex in D, i.e., $N_G[D] = D \cup N_G(D)$.
What do ∆(G) and δ(G) represent in the context of a graph?
What do ∆(G) and δ(G) represent in the context of a graph?
In the context of a graph G, ∆(G) represents the maximum degree of G, given by $\max_{v \in V} \text{deg}(v)$, and δ(G) represents the minimum degree of G, given by $\min_{v \in V} \text{deg}(v)$.
What is the focus of this paper's study in Graph Theory?
What is the focus of this paper's study in Graph Theory?
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What is one of the interesting facts about the study of connectivity and working in the area of domination in Graph Theory?
What is one of the interesting facts about the study of connectivity and working in the area of domination in Graph Theory?
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