Estrada index

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Description

This method calculates the Estrada index of a graph.

Usage

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Arguments

g

a graph as a graphNEL object.

Value

This method returns the estrada index of a graph as a double-precision floating point value.

Author(s)

Lavanya Sivakumar, Michael Schutte

References

E. Estrada: Characterization of 3D molecular structure. Chemical Physics Letters, 319:713-718, 2000

Examples

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library(graph)
set.seed(123)
g <- randomEGraph(as.character(1:8), 0.6)

estrada(g)

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