2011
DOI: 10.1016/j.laa.2011.01.036
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On the sum of the Laplacian eigenvalues of a tree

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Cited by 73 publications
(38 citation statements)
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“…We notice in particular the work of Fritscher et al [5], where the original algorithm was adapted for the Laplacian matrix of a tree and applied to prove that among all trees with n vertices, the star S n has the highest Laplacian energy, which was conjectured by Radenković & Gutman in [8]. Besides, Braga et al [3] adapted the original algorithm for the normalized Laplacian matrix, introduced by Chung [4] and i j = 0, otherwise.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…We notice in particular the work of Fritscher et al [5], where the original algorithm was adapted for the Laplacian matrix of a tree and applied to prove that among all trees with n vertices, the star S n has the highest Laplacian energy, which was conjectured by Radenković & Gutman in [8]. Besides, Braga et al [3] adapted the original algorithm for the normalized Laplacian matrix, introduced by Chung [4] and i j = 0, otherwise.…”
Section: Introductionmentioning
confidence: 99%
“…If D is the diagonal matrix of the degrees of the vertices of G, then L D (G) is the Laplacian matrix of G and DiagonalizeW coincides with the algorithm applied in [5]. Besides, if D is the identity matrix and we take…”
Section: Introductionmentioning
confidence: 99%
“…Em particular, podemos destacar o trabalho de Fritscher et al [5], em que foi apresentada pela primeira vez uma adaptação do algoritmo para a matriz laplaciana combinatória, utilizada 1 rodrigob@unisinos.br 2…”
Section: Introductionunclassified
“…Em particular, podemos destacar o trabalho de Fritscher et al [5], em que foi apresentada pela primeira vez uma adaptação do algoritmo para a matriz laplaciana combinatória, utilizada 2 na demonstração de que, dentre todas asárvores de n vértices, aárvore com energia laplaciana máximaé a estrela S n , solucionando positivamente a conjectura de Radenković e Gutman em [8]. Já em [3], Braga et al adaptaram o algoritmo de Jacobs e Trevisan para a matriz laplaciana normalizada de umaárvore, introduzida por Chung [4].…”
Section: Introductionunclassified
“…It has been shown in [61] that the equality (5) holds for diameter 3 trees. Furthermore, the authors of [16] proved that the right hand side of (5) is always true. Using the database of trees available in Brendan McKay's web page http://cs.anu.…”
Section: Introductionmentioning
confidence: 99%