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THE NORMALIZED LAPLACIAN ESTRADA INDEX OF GRAPHS
THE NORMALIZED LAPLACIAN ESTRADA INDEX OF GRAPHS
Journal of applied mathematics & informatics. 2014. Jan, 32(1_2): 227-245
  • Received : May 08, 2013
  • Published : January 30, 2014
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Hakimi-Nezhaad Mardjan
Hua Hongbo
Ashrafi Ali Reza
Qian Shuhua

Abstract
Suppose G is a simple graph. The <TEX>${\ell}$</TEX>-eigenvalues <TEX>${\delta}_1$</TEX>, <TEX>${\delta}_2$</TEX>,..., <TEX>${\delta}_n$</TEX> of G are the eigenvalues of its normalized Laplacian <TEX>${\ell}$</TEX>. The normalized Laplacian Estrada index of the graph G is dened as <TEX>${\ell}EE$</TEX>
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