Abstract
Let G be a graph with n vertices and λ1, λ2,…λn be its eigenvalues. The Estrada index of G is defined as EE(G) = ∑ni=1 eλi. In this paper, new lower bounds for the Estrada index are established.
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APA
Shang, Y. (2012). Lower bounds for the estrada index of graphs. Electronic Journal of Linear Algebra, 23, 664–668.
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