Geodesic
Hyperenergetic and Hypoenergetic Graphs
Zbornik radova, Tome 14 (2011) no. 22, p. 113

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

The energy $E=E(G)$ of a graph $G$ is the sum of the absolute values of the eigenvalues of $G$. The motivation for the introduction of this invariant comes from chemistry, where results on $E$ were obtained already in the 1940's. A graph $G$ with $n$ vertices is said to be ``hyperenergetic'' if $E>2n-2$, and to be ``hypoenergetic'' if $E(G)
Classification : 05C50 05C90 92E10
Keywords: energy (of graph), hyperenergetic graph, hypoenergetic graph, spectrum (of graph), chemistry 
@article{ZR_2011_14_22_a4,
     author = {Ivan Gutman},
     title = {Hyperenergetic and {Hypoenergetic} {Graphs}},
     journal = {Zbornik radova},
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     publisher = {mathdoc},
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     number = {22},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZR_2011_14_22_a4/}
}
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Ivan Gutman. Hyperenergetic and Hypoenergetic Graphs. Zbornik radova, Tome 14 (2011) no. 22, p. 113 . http://geodesic.mathdoc.fr/item/ZR_2011_14_22_a4/