Abstract
If G is an (n,m)-graph whose spectrum consists of the numbers λ 1, λ2, . . . , λn, then its Estrada index is EE(G) = ∑i=1n eλi. We establish lower bounds for EE(G) in terms of n and m.
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CITATION STYLE
APA
Gutman, I. (2008). Lower bounds for Estrada Index. Publications de l’Institut Mathematique, 83(97), 1–7. https://doi.org/10.2298/PIM0897001G
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