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- 2020
A Note on Some Bounds of the -Estrada Index of GraphsDOI: https://doi.org/10.1155/2020/3972789 Abstract: Let be a simple graph with vertices. Let , where and and denote the adjacency matrix and degree matrix of , respectively. is called the -Estrada index of , where denote the eigenvalues of . In this paper, the upper and lower bounds for are given. Moreover, some relations between the -Estrada index and -energy are established
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