Geodesic
Some Results on Graphs With at Most two Positive Eigenvalues
Publications de l'Institut Mathématique, _N_S_50 (1991) no. 64, p. 39

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

We determine all graphs $G$ such that $G$ and its complementary graph $\bar G$ have exactly one (or, respectively, exactly two) positive eigenvalues.
Classification : 05C50 
Miroslav Petrović. Some Results on Graphs With at Most two Positive Eigenvalues. Publications de l'Institut Mathématique, _N_S_50 (1991) no. 64, p. 39 . http://geodesic.mathdoc.fr/item/PIM_1991_N_S_50_64_a6/
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     title = {Some {Results} on {Graphs} {With} at {Most} two {Positive} {Eigenvalues}},
     journal = {Publications de l'Institut Math\'ematique},
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     year = {1991},
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     number = {64},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1991_N_S_50_64_a6/}
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