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Title:
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On Distance Energy of Graphs |
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Author:
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Gopalapillai,Indulal; Ivan,Gutman; Vijayakumar,Ambat
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Abstract:
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The D-eigenvalues of a graph G are the eigenvalues of its distance matrix D, and the
D-energy ED(G) is the sum of the absolute values of its D-eigenvalues. Two graphs are
said to be D-equienergetic if they have the same D-energy. In this note we obtain bounds
for the distance spectral radius and D-energy of graphs of diameter 2. Pairs of equiregular
D-equienergetic graphs of diameter 2, on p = 3t + 1 vertices are also constructed. |
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URI:
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http://dyuthi.cusat.ac.in/purl/626
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Date:
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2007-08-25 |