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- W3204845953 abstract "The center, median and the security center are three central parts defined for any connected graph whereas the characteristic set, subtree core and core vertices are three central parts defined for trees only. We extend the concept of the characteristic set, subtree core and core vertices to general connected graphs and call them the characteristic center, subgraph core and core vertices, respectively. We show by examples that in a connected graph all the above six central parts can be different and also prove that for a connected vertex transitive graph each of the six central parts is the whole vertex set. Further it is shown that given any graph $G$, there exists a connected supergraph $G_{ch}$ of $G$ with the whole vertex set of $G$ as the characteristic center. Associated with the subgraph core and core vertices, we leave some unanswered question related to the graph centrality." @default.
- W3204845953 created "2021-10-11" @default.
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- W3204845953 date "2021-10-02" @default.
- W3204845953 modified "2023-10-16" @default.
- W3204845953 title "Some new central parts of connected graphs." @default.
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