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Conjugated molecules having integral graph spectra

✍ Scribed by D. Cvetković; I. Gutman; N. Trinajstić

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
358 KB
Volume
29
Category
Article
ISSN
0009-2614

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✦ Synopsis

The graphs 1-7, and only these molecular graphs have integral spectra. The proof af this theorem elucidates also several other interesting spectral prope:ties of graphs which represent unsaturated conjugated ampcmnds.

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The distance energy of a graph G is a recently developed energy-type invariant, defined as the sum of absolute values of the eigenvalues of the distance matrix of G. There was a vast research for the pairs and families of non-cospectral graphs having equal distance energy, and most of these construc